It certainly is. I had to scratch an event at MIT a few years back for this same reason. We didn't even have time to grab a sip of water between interleaved rounds, so we scratched VW after making a cut just to have a chance to drink some water, and to give me a chance to tape up a really bad cut on my foot. Hopefully the organizers can be creative and solve the problem, while inconveniencing as few people as possible. It certainly does get tricky though when people are dancing multiple levels and multiple styles.