Glad you're not hurt worse. In my solo accident last July, I tore my AC (The ligament that connects the colarbone to the shoulder-blade.) It wasn't a bad tear. About a week later, I was taking off a sweaty t-shirt and heard a ripping noise in the same shoulder. I had made the tear worse. It's finally getting better now. The moral: make sure you don't push thing too hard until you have a chance to heal.