Prox, we can't possibly hope to document every single minor infraction that occurs. Which is why we still have VIP as a trusted rank: We trust people to make decisions on what they feel is right and wrong, depending on the current situation in which the event occurs.
That being said: Prop pushing is frowned upon, kickable when used to kill (most times), but using a prop to get out of a room someone is physically trapping you in should not be a problem, so long as you do not hurt them.