without removing the area protection it created.
In both cases, sneak+dig incurs a deliberate cost, in an effort to
prevent a griefer using one protector to go around protecting stuff at
random.
* In creative mode, one protector is deducted from the player's inventory.
* In survival mode, the protector is not returned, and is replaced with 6
steel ingots, unless there's no room for the ingots, then it just
behaves as if sneak was not pressed and throws a warning.