If you are not going to give the mods access to the log files please get them some better tools. I'm about fed up with getting greifed weekly only for the mods to say "sorry noting we can do about it". Yes, griefed again, between 5 am and 9 am (mountain time), PvE3 on Thursday April 27th. Cory,how small of a window do you need to find the suspects? And the left a sign... So yah, they are doing it just to grief the server.
There is currently no working plugin that tracks panels damaged or destroyed by griefers. That's Minecraft. As such, there is no log to parse. The sign I see is outside the claim flag radius so it's really pushing it to say it was placed by the griefer. Complain to Nelson, he's the reason that PvE retains PvP elements.