Actually, this was no grief. Due to an unfortunate coalescence of circumstances, creepers started getting into the village repeatedly, blowing dionvc's stuff to shit and doing a number on my house and the warehouse as well.
So Dion and me decided to pack up and rebuild somewhere else.
We did indeed take all the valuables, and we're currently in the process of finding a new area to settle. I'm sorry, I should've left a sign or something, but we were both just so annoyed by the whole situation (and I think Dion was about to go ballistic) that we just packed up and left immediately. Like I said, Dion lost pretty much ALL his stuff, after creepers blew up his chest and the items despawned. Rebuilding it and making it creeper-proof would've been a nightmare, and the location was becoming more and more untenable anyway.
Again, I'm truly sorry for the confusion, I don't know why I didn't think to leave a sign at least, but the place had truly been blown to hell. Punky had already left, Ace doesn't really play much anymore (and I talk to him on Skype all the time so I already informed him of the situation), and I guess I simply forgot to alert Nit.
Chazza was unintentionally the cause for the situation, but he wasn't intentionally trying to fuck our shit up. He'd built a house outside the wall, and asked me to extend the wall out to his house (since he was constantly being harassed by skeletons and spiders and the like). However, this meant enclosing such a large area that the wall only barely got finished in a day, and I didn't have time to light the place up to prevent spawning. After that, my Minecraft borked itself for a while, refusing to connect to the server, and the next day no-one was online whenever I checked so I didn't play for a day or two. When I got back, the creepers had done a number on the place. But the taking all the valuables and deconstructing my brick walls and the warehouse, was all intentional and part of the move.
I am really, truly sorry for the confusion.