Perhaps the only issue for some is that they weren't in the members wearing their blazers which suggests to me that they were off work and chose to support Wade and the others in full voice .It shows good Aussie spirit and an ability to mix with the common man .I suspect some of the crowd recognised them and were being the antagonists in the scuffle ,along with Rivers , who seems like a mouth when big Chip is there to back him.
my guess is probably as good as the Fairfax hacks who found this scoop.