This is a bit jumbled but I wanted to reply to everyone who kindly posted here. I hope I have replied to everything.
combined02 thank you that is definitely what I meant. I am not worried if ds goes mad at a wedding where he knows no one, who cares if my extended family think he is 'naughty' but if he had a total melt down a lot at school it would impact friendships in his class, which I do feel would potentially hurt ds.
I am so sorry to hear your school were not supportive and not helpful and there was bullying.
DS is fine at school but if he had the kind of melt downs at school he has had at home it would be very hard for him.
ButtonMoonLoon thanks for your advice. I parent my children in a way suitable to them. I have had a lot of input from a variety of sources, mainly things very 'adoption' friendly, some specifically about adoption and some not. I am always keen to know more and always keen to learn. My birth dd is not 'bog' standard by any means and I've had to learn strategies with her that are not of the 'Super Nanny' variety.
I am really not sure where you get the ideas you seem to have about my parenting from. Is this because I said the school uses a sticker chart and I sometimes do too? Sticker charts were specificall mentioned on two adoption parenting courses I did. They do not work for all kids and I am not a big fan but we do use them sometimes at my children's request!
Or because I said it was helpful for kids to know how others may interpret things. Maybe I have made it sound too harsh, I am certainly not into shaming my child or anyone else's child.
Of course I would deal with any thing in any way that is suitable for my child. And I would be delighted to know more about strategies. I would love to know about the SafeBase training, can you say more, please?
We have had some 'therapeutic parenting input' but not enough! clearly! I am always open to more and am considering looking into post adoption support again because of the behaviour that has flared up recently, it is something that has happened in the last bit of time and ds has been home over 18 months, so is relatively new for our experience of ds.
Familyvonstrop re However I'm talking about the emotions behind the behaviours and not shaming those feelings. I absolutely agree with you.
I think there is some confusion regarding behaviour - It's not hurting himself or others. It's not making him unsafe. Firstly, I think it was my comments to another poster which caused some posters to think I was being harsh, so just to be clear I was making comments about how behaviour at school might have a negative impact on the child in question, eg. if it was my child. I was not saying what anyone else should do.
Secondly some of ds's (my ds) behaviour is a bit unsafe because he is flopping down and could hit himself. So I am pretty watchful because it does concern me. I know children are quite tough but it does worry me, and I totally want to understand what is feeding into it because I would like to help him.
I totally agree with posters saying about giving him all the attention he needs etc.
However, if is quite difficult to do this because when he is 'fine' and 'happy' etc he does not appear to need a lot of extra care and then suddenly becomes really helpless, often at times when he is required to do something, get up the table for dinner, etc. Then he can't seem to 'hear' anything positive or helpful or loving. He is totally 'flustered' for want of a better word. 
Re Your sons 'helplessness' could be regressive behaviours and are fairly common. It could be that his very competent presentation was an overdone strength (e.g. like we all do to an extent, he was "faking it till making it"). Now he feels safe, he is showing what he needs on a deep level. Yes very true.
But If you were too tell him that others might judge him for that, you are reinforcing the behaviour is wrong/shameful. I do not do that. But it could make things harder for him at school and it would seem fair to warn him about that. He is 5 and in Year one, I would not think of that with younger children but at school it can be difficult and it is the child who bears the brunt of that. Kids might shame a child at school. Much harder to control than a parent giving a child 'advice'. It is a desire to protect a child not to shame them.
Re You mentioned upthread that you made a conscious decision to change your attitude. Could this be a trigger for you? I wonder if you set aside the feeling that negativity is wrong and that his helplessness could embarrass him, you might see it differently?
Yes, you could be right. I probably need to set aside those feelings and just love him as he is doing it. I guess it has been quite hard as his responses have been very negative even to some nicer things then other times he is quite a happy chappy and fine. This has all happened quite suddenly after over a year here, I am not sure if it could be related to school being harder, e.g. this autumn he went into year one, and it is harder than foundation. or to adoption, it is so hard to know and I might never know but I agree it is about calming the fears and ensuring he knows he is loved. But therapeutic parenting goes beyond that and I would love to know more.
I think sometimes it can be very draining to deal with quite explosive outbursts and maybe I am getting sensitive to it. I know I need to be the grown up and the bigger person etc, of course, 100% but it can just be quite draining after a lot of effort to feel that things are going wrong, especially as other times they are great.
Fresh and Buttonmoon can you say more about the box of feelings, is this the thing where you put a spikey thing and a soft thing and lots of other things in a box and use them to talk about how you are feeling?
Fresh I think your idea of sharing the penalties for things is very good. Yes, we do that too. I think saying "wrong" and 'not kind' are quite similar. I don't use the word 'wrong' with ds or dd all the time at all, but I do tell them things they should not do and I would explain why, if I needed to. I would be more likely to use the phrase 'not kind or 'not nice' etc than wrong but we are still making distinctions between behaviour that is acceptable and unacceptable. At no point does this mean the person is unacceptable.
Fresh re I comfort them; I don't tell them it's wrong. I tell them that big feelings are really hard for everyone, and I will help with those big feelings, and to take their time. It has happened in some of the least appropriate or comfortable places for me like a wedding, a packed bus etc. But it's really not about my feelings of being conspicuous - it's about being there to cuddle and comfort and soothe, and I really don't think other people (adults or children) have ever judged us for it.
Yes, that is very important. I definitely do that and I definitely need to do more of that. I think ds has been so 'together' and calm that it has kind of taken me by surprise.
Familyvonstrap re I agree it's closer to social skill "training" than behavioural - I used those examples as Italian mentioned them earlier. which 'training' did you mean?
mybloodykitchen everything you are saying makes perfect sense. No one would argue with the example you have given and certainly not me.