I was in the stands, and to me it sounded like shite.
But I was in the mosh for the Foo Fighters there too and they had the same problem.
I really wanted to go to the mosh (there was plenty of room...) but security were like sharks, and I'm not nimble enough to make a clean getaway.
Everytime some one got over the fence and made it passed security, I felt the need to cheer.