I'm sure the band had nothing to do with it They were on stage when I realized it had disappeared. Their crew said they had no idea. There was no one else around.
It was a daytime festival. It was called 'The Island Festival' right across from the nudey clubs in Glendale, CO. There was a bikini contest with some strippers from Shotgun Willies between our sets. Hence my distraction. Wasn't expecting or looking for gremlins.