Number 8: *I am the source of all misery, grief, and agony [paraphrased from H's words] *He "apparently" contributed in some small ways to problems (e.g., not sharing his frustrations, keeping feelings bottled); my sins are much worse
Yes. This is a familiar tale. You may hear it five more times. Take real responsibility for your part so he can see what it looks like when someone does. That said, don't let him use you doing that to beat you over the head and shoulders with it either.
His stomach hurts when he thinks about coming home because he has regressed to a childlike state and he wants to stay in his womb. Don't let him blame you for his escapism. Seems like MC could also help. And he won't do that either.
I think you should use this DBing time to think about what it would take for you to be happy with this guy. Obviously he is unhappy with himself careerwise and it's good he's addressing that. But you seem to have concerns that he will always keep leaving jobs as a way to address that and that maybe that is not the real issue either? Do you think he will ever be open to IC to deal with his own stuff. I don't recall if he ever went or not.
Sounds like you've been doing a good job for yourself. Keep making your positive changes so you will feel confident and address the stuff he said that's real for yourself and either this or your next R. Good luck!