After watching it a few times, it looks like security, because it looks like this guy goes over to that spot when Davey gets there. He doesn't look like a security guy because he's wearing a shirt with cut-off sleeves, so he looks more like a fan. However, he's the only one that has his hand up to Davey like that towards the end.
I would have to say it's staff - I hope so anyway. Because if it was a fan just trying to be helpful, it would be a shitty experience for that fan.