I may be wrong about this, but I don't think NCAA rules allow a coach to call for a video review like NFL rules do. I don't recall ever seeing a college coach toss one of those red flags out on the field.
I don't know for sure either. The commentators were talking about it as if Pete should have called a time out before the extra point was kicked to call for a replay. I also heard commentators say that the refs in the booth dropped the ball on this one. Not sure who, but someone drooped the ball.
All replays in ceollege originate from and are decided in the booth. However, Carroll should have called a timeout in order to give the booth a chance. Some are saying that it had something to do with a malfunction with the equipment. Oh well, it cost us an INT, too. Hook 'Em.