A thread of sophistry.
First, it was a foul on Mabrey. Whether Williams had already lost the ball or not is meaningless, because being knocked over by a player, impedes the "knocked over" players ability to recover the ball.
Comparing a "bad" call in the last seconds is the same result as a bad call in the first qtr. BOGUS, why...because you have no time left to recover from the bad call. Game over, you lose.
The fact that it happened in a NC title game, at half court with full visibility to 3 refs, made it a historically bad call.