So, recently I was fighting Vanaduke as normal, winning of course, and when I finished I stepped onto the core only to find that... something was different.

http://img14.imageshack.us/img14/5595/wtfss.png

As to what this is, I've no idea. It appears to be a normal elevator, offering to take me one depth lower, where the one to Haven should be. In place of the Haven symbol, there is a downward-facing blue triangle, and it appears to cost 10 ce. I had 10ce, so I stepped on it; and, lo and behold, it took me right back to Haven. Darn, and so close, too. Well, not for nothing; I distinctly remember having 0me once I was placed back at Haven, so I was charged at least 1me, but not any ce, oddly.

If anyone has any idea what this gate could possibly be, please respond, as I am really completely clueless here. Oh, and I didn't realize it at the time, but there WAS something unusual about this run. We were on the Silver Pawn gate, and if my math is to be trusted, we were there after the new Citadel gate, the coral rook, had opened. Hopefully that serves as some kind of clue into this mystery.