C, Sounds to me that your h is having a "little boy tantrum" and is using your D as a way to get back at you. Unfortunately, he is the one that is huring his relationship w/his D. Of course, you are the big, mean lady who is holding up the paperwork. He's still in the blaming mode and will be there for quite some time.
C, you do what you need to do for you and your D. I'm sorry that he's pulling this crap so close to the holiday, but some of them do this because they are miserable and don't know how to move forward and help themselves.
I hope that you and your family have a Merry Christmas! Please do not allow his meltdown to ruin your holiday...
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.