Coaches tend to rehearse everything but apparently the engineering department snuck in and reinforced the wall while no one was looking (that's the story I'm going with, anyway)!
http://espn.go.com/blog/ncfnation/p...-team-sledgehammers-wall-wall-puts-up-a-fight
http://espn.go.com/blog/ncfnation/p...-team-sledgehammers-wall-wall-puts-up-a-fight