[Muirdach]

It's the no-win thing again, unless there's a senior imm on at the time who you can ask and get a response from right away, or defer the problem to them. If you wait for one to come on and it takes a day or two days or whatever, the moment's gone. No one will remember exactly what happened (or will pretend not to), and the players may have even taken that lack of response to mean "go ahead, it's ok" - so the playerbase as a whole would be more upset later if they're told they're breaking a rule. "Well Immortal <insert your name> was on and knew about it and didn't say anything!", etc. On the other hand, if you do something and it isn't what the higher ups had in mind, you're done like dinner. Any other immortal who doesn't like you for any reason will say that you're overstepping your authority and being a troublemaker and abusing your position to attack players, or whatever.

Ideally, like I said, the Head Imm would show that he or she supports you, would be active to take charge of the situation or at least tell you what to do, would clarify policies and make rules or whatever. If not, think about whether you really want to stay at a place where you don't have that support. If you decide you want to tough it out, my recommendation would be to "see no evil" - just pretend you don't know what's going on, even pretend that you're AFK or something if you have to. Because the second you put your fingerprints on the situation and acknowledge it, you're in that position that really doesn't have a nice and neat ending.