"I was standing no more than 15 feet from 40 people at a time sliding, in unison with locked arms, down said hill. Some others got the idea to strip down to underwear, stack up garbage cans and become human bowling balls," he said in an email to RedEye. "While funny for a bit, it eventually turned aggravating, and they kept at it during the band's set. Not to mention the hill was ripped to shreds and garbage was all over the place."