That apple cart was knocked over, he has had things his way .... bachelor pad, his family still in the house where he left them where he can be involved when and if he wants and still have all that 'me' time to divulge into coloring in his cool coloring books.
I would imagine more outbursts from his as the reality and fear of the unknown begin to sink in, the train is leaving the station and he is just figuring that out.
I think like job said, he has been in LaLa land for so long this will come as quite a shock, seems the me me me chant is common as they realize the financials are not going to be what they are used to, mine too was all about the stuff and the checks and I was like you, more glad to be done with it but still a bit peeved I was losing time with my son for something out of my control. I have come to grips with this as I realized I am more involved and present in the time I have him than I was before BD, so its better to be 100% engaged 50% of the time than 25% engaged 100% of the time.
Hang in there and keep us posted ... you have this