Can't remember if you've been back since I changed my username. Hope you remember who this is. You've asked for 2x4s so here goes. I think you've always had a lot of anger that you were never able to set aside (parents, spending, usual stuff). I think that "reconnection" was doomed from the beginning, and that you couldn't let go of the anger toward his parents was a big red flag. They are his parents. I realize that you think they are too involved. But they are his parents. I think it is best that you have moved out again.
There is a type of couples counseling called discernment counseling, that I think is designed to help people who are ambivalent about divorce, which you seem to be. I think you should find a counselor who does this kind of work, and go yourself and see if you can resolve why it is that you are unable to let go, when you weren't able to put in the crappy work of taking one of these people back (reading Gordie or BlueWave's threads would be good for you on this point). Maybe you can come to your own conclusion of whether there is a world in which you want to be married to him.
I think you must still have feelings for him, but if you can't get past the anger or the need to mother/judge him, then it is probably not a workable thing. I don't think these people come back fully cooked and better than ever.
You've been through a lot. You don't have to take this guy back. Try to find out what YOU want and if it is him, try to find some help on developing some ways to deal with your anger.