Sorry this is a massive post - I just need to get it all of my chest, as I'm tying myself up in knots. Huge thanks to anyone that managed to read it all.
I don't really know what I'm asking for here, I suppose I just need some perspective from people who aren't in the middle of what's going on here, as I can't seem to see the wood for the trees and neither can dh.
We are having some real problems with ds1. Its all so confused though and I'm not well so handling it all rather badly.
Since he's been on the omega supplements (a month now) he's been generally more centred, no mood swings - which is a big improvement on the terrible swings to the depths of despair and sudden reactive anger we were getting before. He has also seemed to 'get it' when he has it explained to him that his actions/words/behaviour has upset or hurt someone else and how they are feeling. We've had a handful of notable instances when, after having someone else's feelings explained to him he has been in real distress at having caused them to be so upset.
When he does get upset however, he is totally overcome by his emotions, as if they are too strong for him to cope with and he's unable to regulate them and get himself back on track.
My feeling is that he has been brought abruptly back to a more conscious state of being in 'our' world and its all a bit much for him to handle. Long term I see it as positive progress, but I do think its hard for him while he's going through it. We've talked lots and had plenty of cuddles and I've tried to be really positive and supportive through it all.
BUT - over the holidays we have struggled with him. He appears compliant when we ask him to do something like brush his teeth, or go to the toilet before bed, but then he bareface lies that he's done it - even to the extent of going and standing in the toilet room, not going, then flushing and coming out - even when he desperately needs to go (he will do this every time if we don't check and will not go to the toilet at all unless prompted).
Last night he did this, we didn't realise and he then went straight up to his bedroom - pulled down his pjs and weed on the floor!
It then transpires that this is not the first time he's done it. This explains the horrible smell we have been trying to track down in the boys' bedroom for a couple of months now. The carpet is going to have to be ripped out and replaced - I had almost given up looking for the source and decided it must have been coming from the wall that is waiting to be replastered after a roof leak last winter.
Obviously dh was furious with him when he caught him in the act and asked him why he did it, when he'd just been in the toilet. He said he couldn't help it, it was an accident and he just didn't manage to hold his wee in. So dh asked why he had time to pull down his pjs if it was an accident and ds said he thought he'd be in trouble if he weed on his pjs (
but obviously not if he weed on the bl**dy carpet!). I went up to talk to him and ended up - much to my shame - completely losing it with him and shouting a lot. Mainly because he simply wouldn't accept that he'd done anything wrong and kept reiterating that in his view he couldn't win, because if he'd weed on his pjs I'd have been cross with him, but he took them off and I was cross anyway.
He couldn't understand that by lying about going for a wee in the toilet before bed, then going straight upstairs and doing it on the floor - he had been disobedient, had lied and then had weed on the floor as a result. I'm not even sure I believe him that it was an accident - something doesn't sit right - its almost as if he did it in defiance - he obviously thought he wasn't going to get caught and has definitely done it before - more than once. Dh was the one that caught him and he said it didn't look like an accident to him.
In addition to that, I've also found out that he's been telling me he's reading upstairs on his bed, but actually playing on his DSi and quickly closing it when I go upstairs.
I've also caught him stealing sweets from the treat jar and yesterday he was caught out lying to me that his brother had punched him in the back when he hadn't. (In actual fact his brother had banged his head badly and ds just stood there and watched him curled up in a ball screaming in pain, so ds2 yelled for him to fetch me and he didn't move, so he shouted 'why aren't you doing anything - get Mum quick' and put his hand out to shove him towards the door'. When we discussed it, ds1 actually was perfectly aware that the shove wasn't a punch - he just wanted to get ds2 into trouble. 
On top of all that, I've found out he's been threatening ds2 to keep secrets for him and not tell us what he's been up to.
There's more - I could go on for pages. All of it seems to be about getting one over on either me or dh, by doing something he shouldn't or not doing something he should and then lying about it. Its as if he wants the power of knowing he's managed to pull the wool over our eyes.
Fundamentally, if his lips are moving - he's 99% likely to be lying and I can't trust either his word or his behaviour.
I had a chat with mum this morning, as she is a clinical psychologist and told her I am so confused. I don't know what is AS related, what is 9 year old boy related, how the two are connected or how to handle it. We talked it through and she felt it was probably a dominance/power thing. That he might have got away with lying once, realised he could do it and liked the feeling.
The thing is, I am not in a good way myself at the moment. I am in full ME/CFS crisis, with really bad brain fog and am much less aware than usual. Because of this, he's managed to get away with little lies about things like, whether or not he's burshed his teeth properly, or washed his face, or changed his pants and socks (I found out too late that he'd been wearing the same socks day and night for 4 days, when I was ill and dh was looking after them) or one day he said he had got dressed when I asked him, but was still wearing the tshirt he slept in. I didn't notice at first because I was exhausted and barely managing to get through the day myself. I found out at lunch time when he was whispering about it to his brother and laughing at me. 
There has been much whispering from him and ds2 has told me that he keeps whispering things and telling him not to tell. We have always had a big thing about not-lying in our family - I have real issues with lying and he has always known how I feel about it and that I won't tolerate it.
The thing is, I honestly don't know what to do about it. He has lost his DSi for today as a result of last night's weeing 'incident'. But then this afternoon he asked if he could have it, because he felt he'd earned it back. This despite me catching him out in two more lies this morning!
The thing is, he never used to be like this. He used to be the most well mannered, sweet little boy, everyone used to comment on how polite and well behaved he was and he never put a foot out of place. Now I feel like I can't even recognise the little boy I had up until he was in year 2 and between him starting juniors in September 2009 and now, he has become a totally different child. Yes he had issues before that, but we managed his behaviour and we were ok. Its almost like he's became more autistic at around 7/8 if that's possible?
Dh and I have been going back through his schoolwork for the statementing evidence and noticed that around June 2009 - so just when they starting transition to the Juniors/year 3 his work took a big nosedive, handwriting regressed badly and that's also when his teacher for the first time ever acknowledged there might be a problem that needed proper assessment.
Is it possible for children to regress this late? Do children with AS have regular regressions as well as developmental leaps? I just don't know anymore, I feel like I don't understand him and can't help him anymore. God knows I've tried everything I can think of to help him over the past two years, but nothing seems to work - he seems to be getting worse and developing new problems all the time.
I am worn out, ill and feel like I haven't the fight left in me to deal with this, especially as it seems to be all pervasive through every aspect of our homelife, but if I don't do something, I seriously fear for his future.
I don't know what else to say really. I'm sitting here in tears again and all I can think is HELP. 