I did not read to the bottom as to the WHY you drank after you became sober or I would not have posted above. While I very much sympathize with your pain-alcohol is a shitty pain killer and you could have gotten better pain relief with OTC naproxen (Aleve) than drinking again, and I have serious doubts about you being unsupervised with any narcotic. You could also usually have gotten a single dose of a strong pain med in an emergency room if the pain was especially bad. People on this board pretty much don't have pain that alcohol would help AT ALL in amounts that would not result in immediate death.
I don't think it is illegal for pain clinics to use methadone in Massachusetts, the controversy is over it's use to ease withdrawl. I suggest you TRY to find a pain clinic in Massechusetts that will prescribe to you if you pick up your doses daily and do random drug testing. Random drug testing is usually required at pain clinics anyway, in any state, but pain clinics often refuse to treat addicts and former addicts, which is what an alcoholic is--an alcohol addict.