He is angry.... duh! And you have figured out that you can't do anything about that, so that's a good step. The trick is to detach yourself from his anger. Try not to let it drag you down. Let him be, as much as you can.
I get the feeling that he wants to be in total control. Of you, the situation, everything. I haven't done a very good job of keeping up with your situation, has he always been like this? Anyway, I think the best thing for you is to let him do whatever he is going to do, while you do what is best to protect yourself. Whether that is to settle, or let him file, I don't know. Make sure you get good legal advice there, and follow it. He will get angry, in any case, but you can't control that.
