MRI shows I have a stage 1 AC strain and small Slap lesion and labral tear but that the main source of my pain has been that I actually fractured my shoulder.  Initial XRays didn't show it, but MRI showed subacute fracture of the greater tubrosity of shoulder with 2.5 centimeter fragment and right where rotator cuff is anchored, and thank goodness it is still anchored, but that thing pulling is causing the pain, and thank goodness all the riding I did at Whistler didn't displace the fracture.  Since it is still nondisplaced and showing signs of healing, no surgery needed.  If you have shoulder pain from falling on outstretched arm, this kind of fracture is common.  I won't be able to really ride for months, but I will be able to come back strong.  I should have taken an intro Judo lesson and learned how to fall long ago.