Zauper:
I dunno, in a single provences case that might actually be more work then is really doable, but certainly they can do a total backup, if they are aware of a problem. Fix the issue and restore the backup... there by setting the game to the time they did the backup.
I mean... essentially thier using some sort of web programming code with an SQL or SQL like back end. Certainly there is a way to back it up, and simply restore it when they put the server back online.
I can understand they probably do not normally backup the backend before they delete a provence so restoring one prov out of a 10,000 or hell even 100 it would be simpler to just have them make a new one and move it.
In that regard its alot like running a forum, 1 user somehow becomes corrupted in the SQL tables. Delete the user and have him or her make a new account, or you can go through the whole SQL DB and find out where it broke and fix it. Obviously delete and remake is alot easier.
S3