The server will be down for today, see here:
http://claytonia.net/forums/index.php?topic=2898.msg22324#msg22324 (http://claytonia.net/forums/index.php?topic=2898.msg22324#msg22324)
The crash is indeed a Sorcery mod crash, and I'm about to make a big step in cleaning up that train wreck.
The server itself won't start until I clean up the mess that someone made, and it's not an easy job.
I should be done by tomorrow afternoon
Apologies for the inconvenience, I can only do so much