oh Dusty :(
Sorry that you are having a hard time with him again but I'm sorry to say it's probably best to get used to this. As for the lightning change on his attitude - yes, that was expectable as well.
There is no contrition in him. He is just doing the counselling for his own benefit and because he thinks once he's done it, he can rock back up on your doorstep and you will welcome him with open arms. You can see this is his game plan, by the "subtle" messages when he loses his temper. When he is back in control of himself, he puts his "face" back on - take notice of what happens when he's out of control, that's real.
Talk to your solicitor about getting the finances straight, in preparation for divorce. You can change your mind about the divorce later if you want/need to, but do try and get some agreement in place (legally binding) before things get that far as to what will happen financially. He may agree to it all willy nilly because he thinks it will never get that far, you will just fall on his neck and he will get his married life back again - and this is what you need to work on.
So I agree with Chipping - don't mention divorce again just yet, but try to get the solicitor to draw up some financial arrangements and get him to sign them, properly in front of witnesses etc. so it's legally binding.
Mouseface - I could do with all those things you mentioned but can't afford to pay you much! It's bloody muggy and sticky and thundery today though - not all fun in the sun, I promise 