I missed it. I thought the Auburn player had reached across his front and knocked the ball away and off his calf. It wasn't until I saw the replay after that I realized it was a double dribble. It's too bad, but I understand how the call was missed. You have to take into consideration that it happened in real time, with the ref responsible for that call looking at it from floor level, and with the offensive player between him and the defender. He missed it for sure, but I don't see it as something that was egregious.
Something that's getting lost in the conversation surrounding the call is that Auburn missed free throws on its last two possessions as I recall. If they go into that last VA possession up four or five as they could have, Guy's attempt at the three is meaningless. Instead, Auburn commits a bad foul, Guy drains three free throws, and Auburn loses. Terrible break for Auburn, but sometimes those things happen.