Lots of good advice so far. If you don't want to deal with it out-of-game (it depends how big a concern it is to you) I'd suggest having friendly NPCs and good/evil dieties react to it. Out-of-game I'd simply tell them that if they continue their behaviour there will be consequences. Preferably with a mischievous grin and some sinister dice-rolling behind the screen. Be sure to point out that restore corpse is merely a first level spell...Restore corpse won't fix broken bones.
D'oh, just read the description there. I'd forgotten that it was a counterpart to decompose corpse, just that "huh, I'm sure there was a spell for just this."