That is a hard one. Just remember that it isn't always black and white.
Make a choice that is going to be in your best interest. Just do the next right thing. You don't always have to be able to predict what that is going to mean in 6 months. That was so hard for me. Do the next right thing today. Tomorrow I'll do the next 'next right thing.' based on the information I have at the time.
Could moving be 'the end'. It could be, you'd have to be prepared for that. You aren't divorced until a judge signs a paper though so moving is not the same as divorcing. If he is in recovery, and he gets further in recovery, and if you have not nailed the door shut on the marriage, it is possible that he would eventually follow you there or you could move back. It is so hard to just do the right thing for today and let tomorrow take care of itself but when I started doing that, I became 'unstuck'. A house is just a house. You can always get another house.
ETA: I would get a quick consult in with a lawyer.