Just show it, edit really quick, then hide it again. Then again, people will be able to see it if they're there in the time before you hide it again.
Anyways, this may not happen for many reasons, so I think the best thing to do is have Pokemaster delete it, considering it's possible to see past edits. I think I read somewhere only he can delete stuff but extremely rarely, this might be an exception. I'm not sure though, there's probably easier things to do.
Edit: ninja'd by sumwun, by 8 minutes