Not as a scolding reply, but I feel that with your background you should know to have a second opinion on something as serious as surgical repairs. Is there any change in the severity of your pain so far? It seems that the high degree of separation is not going to see as high a level of recovery without some very serious PT and/or surgery. Probably "and".
I have not had as severe a shoulder injury as yours, but the two I have been dealing with are painful after 2(left) and 3(right) years respectively. I am in the same school of thought as the long PT replies to the OP about his, after surgery I'm afraid. I'll hope for less pain, more recovery and some good thoughtful physicians. Oh, thanks for serving in a very necessary field and billet.
Bill