Flagrant Foul at End of OSU vs Charlotte Game?

[Nevadaref]

Too bad because I would very much like to see the instruction that the officials are supposedly following in this play since I don't see anything other than a common foul by the defender.
He puts both hands on the opponent, one in the front and one in the back, in order to commit a foul. He doesn't grasp the opponent's arm, do anything which could cause injury, or feign that he was fouled. He also immediately ceases contact upon the whistle. I don't understand what else could be desired of this defender. He gave a strategic foul in a sporting manner.