A guard working at TCF Bank Stadium was fired after he roughed up some of the fans who were among the thousands rushing the field following the Gophers' football upset over Iowa on Saturday.

The guard's actions were caught by fans in the stands on video, and those images were posted on YouTube. The guard was an employee of CSC, which was awarded a five-year contract in 2009 to provide security and event staffing services for the University of Minnesota.

Before Saturday's game, the security staff was advised not to stop the fans if they poured onto the field after the game, U athletic department spokesman Garry Bowman said on Thursday. But the security guards were told to protect the "stadium's assets," such as the goal posts, he said.

After the Gophers beat the Hawkeyes to claim the Floyd of Rosedale trophy, fans streamed onto the field. At one point, the guard was hit in the head "and got angry about it and then started pushing fans down as they ran by him," Bowman said. "He was way out of line and has been dismissed from his position by CSC."

CSC officials in Minneapolis were not available to comment.

"I was getting ready to film the Gophers go get Floyd," said Bobby Krzmarzick, whose cellphone video shows the guard in the student end zone push one man to the turf and then try to trip another running by. "Once I saw him attacking fans, I switched over there."

Krzmarzick, 26, of Plymouth, said the guard "didn't really seem to have any purpose. He would knock over people and they would just keep running. ... He was really going after the people who were not as big as him."

He said he feels some satisfaction that his video might have played a role in the guard losing his job. "At least it gave some evidence, as opposed to just 'he said, she said,' " Krzmarzick added.

Paul Walsh • 612-673-4482