That rockabilly band was "The Velcros" from Syracuse, NY. I work with one of the guitarists, and I know a couple of the other guys too. I've heard some funny stories from that tour and seen some backstage pictures.I remember a rockabilly band opening on the 1984 tour. I think it's Dave's thing! Mix it up...
How they got that gig I've never heard though. I should ask Mike, maybe I can get some of those pics from him.