Remember he has fired you from being on his support team...this is his problem to figure out and solve. Keep your boundary right now, maybe temper it by saying the two of you can review it in a couple of months...but right now, he has created the situation that causes the challenge. Please let him suffer some of his own consequences. In a funny way, it is about respect....treating him as an adult who is responsible for clearing up his own mess and respect for yourself to detach enough that you leave him to it.
Me: 53 H:38 T:20 M:14 BD ILYB etc 10/15, H diagnosed severe depression S 1/16 PA 4/16 H filed 1/17