I used the ebony wand on tile coords 866, 1036(creative map on a LAN server) or at least fairly sure that's the correct tile as that is where the opening ended up however instead of creating a flat base as usually it shot the ground up in a spike 277 slope up and made the top of the spike the flat area and what appeared as the ceiling was actually the floor. the highest corner ended up a 364 slope so its not possible to surface mine it back down. I'm assuming this to be a server bug but if not sorry for the incorrect placement in the forum.