Skipper - he's got a loooong way to go, and maybe a few starts and stops, and maybe, like mine, an ultimate decision to end the relationship regardless. Ya know - the old timers at AA told me (and a few in Al-Anon as well) that true change can take several years - yes YEARS - for the addict/alcoholic.
What worked for me was to get on with my life anyway. I never stopped living and doing things that mattered to me and made me feel human. I didn't let him or his feelings stop me from meeting my own needs, and he definitely acted threatened by my life choices.
Your final question - well - I think I came to the conclusion that I was waiting for someone who simply wasn't, and that wasn't fair to either of us. When it finally clicked for me that it is ok to simply say this is not meant to be, other paths began to open up for me. Only you can decide, but I caution you to focus more on how YOU feel, versus what he is doing.
Good luck!