Damn kid you fucking crazy! Mad props!
He was damn close, and for all the people bitching about whatever it is you need to bitch about you can go to hell. I would go ahead and say this kid has the skills to pay the bills and yes it was a bad fall but I have seen way worse falls.
Look at it this way I have seen kids eat shit harder trying 720s on 30 foot jumps or just trying to get a hand rail. Yeah he could have broken his neck but the kid at your home resort trying a backflip for his first time has just as good of a chance if he doesn't know what he is doing.
Heal up man and if your going to try this shit again find a better jump.