Hamster, I have no doubt he was serious "at the time". Maybe when all the moving business settles down he will be less tired & less defensive.
Hopefully with school getting started things will be more structured & he'll be more open to having Sunday visits.
You're the mother to his children, that's a bond for life.
Try not to give up just yet. Let's hope all he needs is some space for now.
Wish I could offer you more.
I also know how numb feels & not having an anchor, something to hold on to.
You have worked so hard and come so far, it won't go unnoticed.