Hi doomsider,
This is not the first report of this type, and schema looked into it. (So it can be fixed fast, don\'t worry of a total loss of it).
What you have to do now, is to contact beetlebear (server owner) on the chat here, or on the server, or even schema(controls over the server), to fix that issue and repair your sector, telling them where is your home sector to them.
Good luck,
-Mike