Clarifications on primary rules

"He also called on all parties to agree that conventions should proceed “without interruption or interference of any manner,” including “auditory or visual distractions.”

Does this mean they have the power to eject Bernie Supporters from the convention floor eliminating their votes?

Secondly, if Hills gets indicted after the convention and is forced to withdraw, does the rules require a second convention to pick a nominee or just a back room deal? At that point wouldn't their allegiance to a candidate be no longer binding since they have already voted?