He is blowing smoke in your face. He would already be in AA working a strong recovery program if that is what he REALLY wanted.
The % of recovery for life people is very small, like something less than 10%. Is he one? Who knows, the question is: Are you willing to put your life on hold waiting for a miracle?
There are no guarantees with this disease, relapse can happen at any time.
Yes, you are stepping back into fantasy land, keep those meetings up and follow the restraining order, it applies to you too.