his shoes fell off because they wear them pretty loose, and the force when he hit made them come off i guess. I know in car crashes, people's shoe's come off all the time, i guess its just when there is a big change in direction. He is lucky to be walking though,,,
And this is the Video of Scott Murray trying the double backflip on his motorcycle. he has no sponsors or anything, and he brought is own ramp over 2000 miles for this one jump. This guy is the Man.
http://www.youtube.com/watch?v=_WIG4EbagMk