The key to identifying the POI in the sketch is through all and any available witnesses, pictures and video from that night and encouraging those there to submit such available information. I'm not judging these people. The first time it became public that those videos were available was through the press, days later, with Big Mike telling the reporter that he didn't know if LE knew they even existed. That fact, released to the press by him and not provided to LE from day one, and then the lack of public outreach on his site, where his fans are most likely to check for information, for cues on how to respond, because social media is mostly a socially vacuum, where most react to situations based on how others react, seems less than socially responsible to me.
You're right though, I can only go by what I've seen, and there may be more to his level of cooperation. In reviewing, I do recall an email list of his concert goers perhaps being made available to the Brucks for outreach, but I haven't yet found any MSM reports to confirm it.
