Superfly,
Both of my discs are displaced. I haven't had surgery, but I have quite a few articles on jaw surgery & TMJ. I'll look through them again and send the good ones to you. I am worried about it too, so have been researching as much as I can.
Honestly, I WOULD be concerned if the surgeons aren't concerned.
You could contact a 'Roth Williams' Orthodontist to get a different take on things. The RW philosophy respect the joints. Arnett & Gunson follow this philosophy, as do the orthodontists they refer to. They would most likely put you into a splint first to get your joints in a stable and comfortable position. I can't speak of their success personally, but I like their take on things and wish I had someone near me who follows it!