I was on today and I was the only VIP and no mods or admins were online. There were several complaints of people grieving right infrint of them. Of coarse me being a VIP I could not stop them other than talking in the chat.
Your best course of action is to take a screenshot (alt+prnt scrn, then paste into paint), and post it on the forums. This lets us know that the griefing indeed happened, and that we should ban those responsible.