You sound like your luck riding a quad isn't so great to begin with. I tried to backfilp a quad thanksgiving weekend of '08 and am still paying for it. My buddies and I kept jumping a sweet jump we had made and I should have used a little more sense than I did on the last one. I looked at them and said I am going for it,well I made about a 3/4 rotation and realized I was screwed. I bailed with backbrace and all and I couldn't hardly walk for 2 days. I still ride but not near as hard. And everytime I think about something stupid I just remeber what I did.