So here's what I got out of that e-mail. They implied that Mr. Good did not finish the full set, though as argued by many he played at least 11 songs. They also said that they weren't trying to point fingers at anyone but it seemed that way from what I read. I remian neutral at this point as I do not know what actually happened. I do believe though that alcohol was the main contributer to this incident. Some of the crowd was just rowdy.
I believe the whole lack of a better barrier was accidental and likely overlooked. Let's just leave this to the parties in question.