TECHNICALLY it can, but it can only be used with mod approval because the character is out of the game once stumbling upon one. Other than that, characters can be removed from the game via character death by another character (you MUST give the mod a heads up, or she will assume that this was not done with player consent), character death by the hands of Lucifer, or Metatron either returning them to their home gently or whatever.
Characters CAN be killed by Lucifer at any time, technically, if they piss him off enough. Unlike non-law-enforcers, Lucifer and Metatron are able to kill others. Metatron just isn't likely to do such a thing.