I have a bit of a problem - I've got a pretty extensive area in the Nether in SMP4 that I've made, and it seems like someone has griefed it - breaking through glass, and putting a lot of blocks around to get from place to place. It looks like the player in question has probably been banned (they don't show up as an active member any more), but the anti-grief system is preventing me from undoing the damage they've done - I can't remove the blocks they've placed. Any suggestions?
