Rotator cuff trouble

I am noticing some soreness in my left shoulder/rotator cuff after doing heavy DL’s for the last two workouts. I get a twinge of pain when I’m just moving my arm, especially when I move it in an upwards motion either in front of me or to the side. It does not feel at all like healthy soreness. I am wondering if anyone else has had this or knows what it could be, and also if trying the new T-Mag rotator cuff program will help. Should I wait before trying the program? I have had some RC problems in the past but I managed to work through the with some very light weights (1-10 pound DB’s) and lots of stretching. They were, to my knowledge, completely healed by 4 months ago. Any help with this would be greatly appreciated.

Internet diagnoses are virtually impossible, but I’m willing to bet that it’s subacromial impingement, probably with related bicipital tendonitis. See my post to Sully on the other rotator cuff thread for details on what you should avoid and do to fix the problem.