"ARTICLE 16. a. When it is obvious that a scrimmage kick will be made, no opponent shall run into or rough the kicker or the holder of a place kick (A.R. 9-1-16-I, III and VI). 1. Roughing is a live-ball personal foul that endangers the kicker or holder...4. The kicker’s protection under this rule ends (a)when he has had a reasonable time to regain his balance(A.R. 9-1-16-IV).. 8. When in question whether the foul is running into or roughing, the foul is roughing"

Just watched it again, and you're right - his leg had come down, although not all the way.. I just don't see anything in the rule his leg having to be completely extended. I would not say he'd had time to regain his balance. However, you've talked me down - so I have less problem with that one now.

http://www.byutv.org/watch/4a3a1021-29b0-40ed-8125-834722a360d6/football-virginia-vs-byu-092014

56 minute mark