He caused problems, and I did see them. Basically, he would slowly go back until he lightly bumped into whoever was behind him, then go forward a bit, and then repeat. The guy behind him was getting so POed, I thought he was going to pull out a knife or something.Or, maybe the guy was an idiot who caused all kinds of problems you didn't see....
It was really was funny to watch though. The guy with his eyes closed, looked like he was totally in bliss, but you could practically see steam coming out of the guy behind him.