There has been quite a bit of justified talk about the onside kick. I also thought that the ball had to travel 10 yards and either hit the ground or have been touched by the receiving team. I know for sure in high school it must hit the ground AND travel 10 yards, but it doesn't sound like that is the case with college. However, the rule isn't completely clear.
https://twitter.com/jayfeely/status/686804165453058048Under article 3 above, #1 definitely didn't happen. #2 did happen, but combined with #3 it just adds confusion.
To be fair, if the Clemson player had simply made an attempt to go field the ball while it was in the air, the Alabama player couldn't have touched him or it would have been kick catch interference.