There's always a temporary chairman at the start of convention, usually appointed by the committee. The problem arises when this temporary chairman tries to avoid giving up the chair if and when a vote happens and that temporary chair loses. We've already seen several chairman get sour when they get booted. So point is, this guy may be the legally appointed temp chair and there's nothing wrong with that. If he's challenged and cheats then bust his balls.
"If we understand the mechanism and motives of the group mind, is it not possible to control and regiment the masses according to our will without their knowing it?"-Edward Bernays, grandfather of modern propaganda