So his words are clear that he has no intention of getting more involved with me.
Have you ever heard believe none of what he says and 50% of what he does?
I believe that applies here as well.
He is reconnecting but he is still in his crisis. Until he breaks withdrawal, which he has not done, I would believe nothing of what he said.
I asked you what you wanted. My advice is to let him do whatever he wants. Do not help him. If he wants a divorce he must take the action to get it done. Validate his desires and keep living your life.