the haka was within reason. They did it to honor one of the players fathers who died, did they not? And thus why they stopped after the player graduated.
Most rugby teams are going to understand why the haka is done by some rugby teams. Except Arizona St. apparently last year who didn't understand BYU's haka is something they do before every home game, to respect their opponent and put forth a challenge, so they turned their backs on it...which majorly yewted off the BYU players proved by the way they crossed the meter line-which they never do.