Crud had such a light show going on, combined with so much smoke, that an ordinary flash wouldn't have worked anyway. It was all about pushing the button and hoping your exposure timed out with the lights.
Granted, I'm no artist, and it's not much of a camera, but I've been trying to take photos of live bands without a flash. I like the effect I get; using a flash washes out the stage lights, and takes away the feeling of being there. The resulting photos are a bit surreal, and I delete about 90% of them. But the ones I keep, I'm liking the atmosphere they give.
Give Crud a listen. They're a great blast of guitar-fuelled industrial music. There hasn't been a lot of that around for about 10 years.