College Football: Was Bret Bielema "Wrong" for 2-Point Try Against Minnesota?

The Wisconsin Badgers defeated the Minnesota Gophers by a final score of 41-23. However, the final score won't be what anyone focuses on come Sunday morning. No, much of the chatter will center around the ethical nature of Bret Bielema's play calling with his team up by more than three scores.

Leading 41-16 in the fourth quarter, with less than seven minutes to play in the contest, Bielema called for a two-point conversion after a Wisconsin touchdown. The conversion ended up being no good, but it was clear that Minnesota coach, Tim Brewster, took some exception to Bielema's decision to go for two with the game so well in hand.

Bielema defended the call, saying that it was the proper one, given the circumstance and the score, but Brewster obviously felt it showed a serious lack of class on Bielema's part—calling the move "wrong".
It's easy to understand why Bielema's actions could be classified as bush league but, then again, we've also seen teams go on big run inside of ten minutes—diminishing a big lead within a matter of minutes.

Hard to say for sure who is wrong here, but, what say you? Was Bielema bush league or just playing it safe?