I remember when I was in there playing with my band a few weeks back. One of the bands, I think it was Junkdust, had a group of underagers with them, and that Jim dude had no problem with them being there, he went over just to check on them a few times, but he seemed very reasonable as they were well behaved. Maybe you were doing something wrong which he didn't like that night, behaviour, maybe? I don't know, I'm just speculating.