How did you find out about the paycheque change? Is this a response to you telling him:

"One of the last things I told him was, "you're right this is over and I deserve better." He got very angry when I said that."

My W told me she was going to sleep in the kids room. I know that isn't a full separation, but to me it might has well have been. So after thinking for a day, I told her that I wouldn't accept just the room - it would be all or nothing.

I wonder if your H hears your comments and body language as certain D. Perhaps, he may be reacting emotionally, too. From what you've said, he has his own take one what is going on and just as you see his faults, he likely sees yours. But he doesn't have people around him telling him to stay M.

The shock must be there, but when you planned to file for a divorce and end your marriage completely, didn't you expect this?