something similar happend to me once. I was manualing with my foot out the bak and when i was swinging my foot back it got stuck in between the brake and the wheel. flew over the bars and face planted onto the concrete. i got owned XP
i was manualing with my foot out the back, it got stuck in between the brake and the wheel, it wasted my toe and a got thrown over the bars and onto my face lol i suk XD