I've seen random votekicks and votebans before, even if the offender that is being votekicked saying that it was accidental and it was confirmed. There should be a moderator command in Q>Vote>Cancel Vote Move to other forum if relavent. EDIT: Also to refrain from abusing the postpone/skip phase command.
This could be useful. When forcing an event, sometimes people will start a vote for a random event and it will override the forced event for the next round. This could be used to keep that from happening.
I've also seen where this could be useful, especially when VIPs randomly start a postpone phase vote 30 seconds into the phase.