When I had tendonitis in the rotary cuff (i.e. shoulder) this winter my GP did a quick-and-dirty diagnostic saying it didn't really matter which tendon was inflamed, just the general area. His "prescription" would be the same. He would send me to a PT who would do a more detailed diagnosis and set up a program of exercizes I'd have to do for about 3 months. That's not forever. It's a long time, and the exercizes are booooring, but it's not forever. Three months later, my posture was better, the pain was gone, my shoulder had normal mobility, and I did what I could of the ALC (about 230 miles of it, which I guess isn't too bad for a 60-year-old lady on her first ALC). On the ride, my shoulders were not the problem; it was my knees. Soooo ... my advice is that you grit your teeth and stick with it. Keep doing those stretches etc. It took you a long time to build up the inflamation; it won't take quite as long to get rid of it, but it will take some time.

Good luck, and get well quick!