I guess if you weren't there (especially in the first couple rows) you would never know or understand.
But they just were making fun of the music, pointing to their co-workers to single out a screaming fan and laugh...
And Third Eye Blind wasn't "blind" either, Stephen threw his cup of tea at the floor below him where the staff were after trying to be cool with one of the dudes.
Again, for the 30 people who were in the front row, you'll know what I mean.