racing, it's rumbling, there's a lot of noise, the horses are making noise, the rigs are jumping up and down and rattling. >> backstage, a bull named hardball is in his holding pen. >> hardball is a bucking bull. that night he was scheduled what we call a re-ride bull. on any given night, a cowboy may get a re-ride because of something, a bull doesn't buck or a horse falls down or it slams into the chute coming out. >> as the chuck wagons roar across the stadium, hardball's startled. >> he ran forward into a gate that was in front of him, pushed it forward and allowed a pin to come out of a gate that was beside him. >> the gate unlocks and hardball races out toward the exit. this surveillance video catches hardball as he makes his escape out of the stadium and into the loading dock. >> it was quite exciting out there on the loading dock area, as people were trying to stop him, trying to push him in. >> but it's no use. hardball charges forward. he sets his sight on the parking lot, where thousands of spectators are gathering for the concert.