Once again, thank you all for your incredible support.
Problem is, I do believe that parents who can get on reasonably do make a huge difference to the way the kids react to divorce. I keep reading it in all the books, and as my parents weren't able to manage it I know from experience that it would have been a big help.
But the more he continues to behave like an arsehole, whilst hitting me around the head with the 'must be friends' stuff, the less likely it becomes.
Sent him a reply to his long email last night (basically a whinge about how selling the house will leave him with nothing, but couched in terms of what a good devoted father he is, and why won't I help him, he's about to have a nervous breakdown). It took me a few days to reply, largely because DD has been ill, and when he didn't get a response he eventually sent a text asking how she was, knowing I'd have to respond to that. Then, with a foot in the door, started whingeing on about his own stuff again ...
I sent a very (I hope!) calm reply, stating the financial situation and saying that when he feels miserable and 'lost' I am not the most appropriate person to be talking to about it. Haven't heard a word back, not even to find out how DD is today. He's sulking, and suddenly his concern for his daughter isn't quite so manifest. But he'll probably get around this by saying how cruel I was not to let him know, ie the onus is always on me. I'm tempted to text him now, saying 'by the way, if you're interested, DD is much better today' but I just don't want to get into the ring again.
He's supposed to be having the DCs tomorrow - his day for seeing them, his day off work (he has own business). Usually he picks them up after school and takes them back to his for the evening, then drops them at school on Thursday morning. Last week, because it was the holidays, he suggested picking them up 'a bit earlier' at one! So he still got his 'day off' - what happened to shared custody?! I didn't make a fuss as I'm not working so it doesn't really matter, but where is the loving, concerned father when the kids are home from school and eager to see him? Having a bloody lie-in ...
Fuck, I'm ranting again. Sorry - it's just good to get it out.
Onebat - if I'd had the strength I could have fought for a better deal, but I will get a substantial chunk of the house sale (if it ever sells). And he's been very diligent, to be fair, about paying child maintenance. If I only had a job, things would be a lot easier, and I'd rather not be financially dependent on him and his moods ...
SGB - yes, I could force a sale but it would be time-consuming and expensive. It's what I will threaten, if things don't start moving soon.
This thread is doing me so much good!