Blacky was there. He was Martyr's soundman, actually. I spent some time talking with him which was quite cool.
I'm under the impression that they hadn't planned to do a Voivod cover for certain. Martyr recently covered "Brain Scan" in the studio, with Blacky playing bass. But when I spoke with him he told me "If I'd have known there'd be fans here who cared, we could've practiced 'Brain Scan' and played it in the set tonight."