WOW that crash was bad. All kidding aside that guy is really hurt. Not only is he cliped in but he is also strapped to the pedals. All track sprinters use that type of pedal. They work good except when you crash. For the record I have not had a crash that bad on the track. Hopefull I never will. Have come very close a few times. Cheat death much.
That type of racing is called Kerin. Very big in Japan. Head butting is standard. When I began doing matchsprint a former Japenese national kerin champion helped train me. On my very first sprint he used the headbut on me in the final turn. I was like “dude easy”. He told me I had a lot to learn.