And what's the difference between this and leaving/returning?
A great deal. Someone leaving to go off to SA again or w/e is at least taking their punishments as proscribed or whatever, unlike say what Tim did with Alanna.
Dont get me wrong, I love the RP behind it, but the game mechanics being used which directly mean someone cannot take action against you just... well its the very much like Alanna still being a Royal and untouchable... Its not good roleplay in a mechanics point of sense.