In reply to Hat Dude: I tore my left hamstring while skiing in 2008. I got one of my ski tips stuck in a hole in a thick icey crust while going downhill and face planted, so I'm pretty sure where the tear came from. I did walk off the hill (no choice), but it was really quite painful and the hamstring was spasming. Initially I was more worried I'd done something horrible to my knee, so I went to A&E and they x-rayed it. It took about 36 hours after the fall for the back of the thigh to go black.
In the end I never actually saw anybody specifically about it. I couldn't sit properly for about 10 days and started dancing (competitive Latin and ballroom) within about 2 weeks. 6 weeks later I went ski touring for a week. Initially I could feel the scar tissue (?) in the tear doing things like forward bends in yoga, but all that remains now is that my left leg has about 20 degrees more movement than my right.
Sports massage would be a good idea to keep the torn muscle from forming scar tissue and make recovery easier, but I suspect in the end the muscle just has to heal itself.