Semi Interesting fact, back in 2003? ish, Cipsoft had to reset all of the worlds by 10 days or so, because of a program someone released that was very similar to WPE, but the packets were saved and ready to go.
My friend had gotten access to this program and had shown me what it could do, which is the only reason I even know about it, as of course cipsoft brushed it under the rug and named it a technical difficulty affecting a large group of players.
basically, a player could move any wall 1 sqm, but it took nearly 20 minutes for it to work.
As you can imagine people were looting other players houses and getting access to previously unobtainable area's.
Nobody noticed for nearly a week, because originally the people using it were being smart about it, and moving the wall, looting what they could carry, then moving the wall back. Whispers of items going missing were floating around pretty much everywhere. I guess at that point the program creator released it on a forum and lot's of people started using it until cipsoft did whatever magic they required to find the issue, and track it back for how long it had been happening, and then reset all of the worlds.
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On topic, I have no answer, just thought it'd be cool to share the story.
Although my best guess would be some sort of 'movement' spell, that isn't working as intended.