The simplest thing would have been to refuse to resume play until the unauthorized personnel were moved. If this required the game admin to tell the cop to move his buddies so the game continues, the onus is on them.
In a clash of egos, the badge and gun are always going to win in the short term.
While I would never criticize the remaining officials who finished the game, I believe I would reach a conclusion that the same officers arresting my crew mates were going to be responsible for my safety and thus the situation was no longer safe to continue.