Imo it's a bad sign if he doesn't want to go to meetings anymore. Even if he doesn't plan on using the further he separates himself from the fact that he has a problem the more complacent he will get and more likely he will use. This is what happened to me the 1 time I relapsed. After being sober sometime I slowly and conveniently forgot about my problem to the point where I didn't think it was a big deal to use. That spiraled out of control faster than ever and was even harder to get sober again.