I witnessed a bad crash a little over a week ago. I was riding with some people and the guy riding just behind me lost control of his bike and rode off the MUP into some trees and shrubs. He was hurt pretty bad. Broken nose, jaw, and orbital bone, and possibly a concussion. You know what part of his body wasn't injured? His feet, ankles and legs, because when he crashed, the clipless pedals worked according to the design and his feet released from the pedals.