In my high school game, in real time, I'm calling a player control foul. Defender got to the spot before the shooter became airborne, took the full brunt of the charge to his torso, and didn't embellish the knock down (because he didn't need to). I'm pretty sure that you college guys will have a different opinion, and that's alright with me. I know more about relativistic quantum mechanics than I do about how to officiate a college basketball game.