Um yes, ski resort managers and ski patrol can take you pass for anything they deem "inappropriate" or worthy of taking your pass. Basically they can take it for no reason if they really want to, its private property. Believe me, i went through about 3 hours of bullshit at PC about all of this. Just read the back of your season pass, it says it.
And nic, i would probably be pissed but i wouldn't bitch about it, jumping off a lift is a legit reason to get your passed pull, and im positive everyone knows that and is aware of it.