~OLCommand :~RS unarrest
~OLUsage   :~RS unarrest <user>

Resets the user's level to what it was before they were arrested and moves
them out of the jail to the main room (ie, the room you start off in).
The user does not have to be online to be unarrested.  The unarrest is
level based, in that is an ARCH arrested someone then only an ARCH or
higher can unarrest them.  The arresting level is displayed in the ustat.