@Mahjack: I spent numerous hours trying to find the video. No luck. But if you or anyone else here wants to search for it you are more then welcome too. Here is what I can tell you, it happened at High Point Racetrack during nationals in 2009 (in the Summer). One of the professional riders was coming down off after a jump and he hit me in the back of the leg and I was laying there on the ground for a few minutes. I've been told I look a bit like Michael Cera from SuperBad.
If you can find this video, please share.