Does the pain decrease if you do biceps exercises that shorten the tendon, like bent-over concentration curls? Does the RC pain lessen if you warm up the area? I had a left-side bout of supraspinatus tendonitis and I just slowly worked through it.
As for the biceps tear, it might just be tendonitis, in which case, you can work through it carefully.
Erm, to he honest everything hurts, standing holding my phone now is aggregating it, I block it out to train so am not really sure.
I do suffer with bouts of tendonitis, but the reason I'm sure something is torn is the fact that I can't squeeze my right bicep to save my life, the outer head just won't really tighten. And I have reduced mobility on my right shoulder. My left arm I can get up behind me to get my hand between my traps. My right side I struggle to raise it enough to get the back of my own neck.
Edit: I mean above my head then bending my arm down.
I'd love it if all I needed was some physio or massage work though.