Could Urban have put in a more conservative game plan than he did against UT? Run the 2 and 3 gaps all day then send the fullback...I mean quaterback up the middle to get the 1st down. Maybe Urban's professional respect and relationship with Monte Kiffen runs deeper than we know and he was just giving an old mentor a break.
I think it's simply a game of give and take. Tennessee was obviously playing a "let's run the clock out and limit Tebow's time" type of game and Urban knew it immediately. Urban wisely understood that the game was already won, and did his part to maintain the status quo. Although it didn't "look pretty", it was effective and the correct thing to do.
Trust me, Urban knows what he's doing. He seemed ecstatic after the game and proud of the way his kids battled.