In one splice it looks like he tweaks his ankle or achilles and hobbles for a bit, and then he's back to flailing away on stage. I've had bosses like this and I always wanted them to take a drug test. They get all fired up and start yelling and leading cheers, leaving me muttering, "Dude, it's only tech support; it's 9a, and we're already tired. Just let us get back to our chains and cells, uh, cubicles."
