How should I proceed now? Is there hope?

[TimeHeals]

I hope I'm not commiting too great a sin in leaving him to his own devices and putiing him in a "box" on a back shelf.

Umm... it's way better and way more healthy than ... say chaining him to a bed and then hobbling him with a sledghammer like Kathy Bates did in that movie, "Misery".

You would be codependent if you didn't let go. You will be just fine. Soon the anger will be gone too. You just deal with the stuff you have to deal with and have a good life.