I'm sorry you have to go through this, really I am.
It is my feeling that when we have addicts for loved ones it kind of like grieving for someone who has died, and there are steps to grieving, you are just going through one of them. Perfectly normal feelings.
you'll come up with the right decision for you because you are already on your way to recovery from his addiction. Keep reading, keep posting and perhaps find a meeting you can go to, they will understand for sure and you won't have to worry about judgement.
good luck