So does this elder know that you know he has this issue? If so, I am shocked he has not been squirming..
If he is that awful of a person, and your goal is to humble him, then perhaps do some anonymous mailings, etc. What would his wife say? Would she hush hush it? What about some of the R&F that he has hurt? If he has power to hurt others, and you have power to take his power away, then I would make an effort to do that.
I am not shocked that your IT department does not really care. That is commonplace. Many people think that you get fired over that stuff, but it happens so much. Our CIO found loads of porn on our shared drive! Someone loaded tons of it and took up so much storage he had to go tell him to get it off. He didnt care, he just wanted the space on the server.
Back to the issue though, I think it is for the betterment of the "innocent" Jdubs for this jerk to be humbled a bit. That's all. Get creative.
What is Oz? What is the overall Aussie JW attitude? Same as everywhere else? More strict? I always pictured it more low key. Sorry for all of the questions.