This glitch happens a lot to me, and has never caused any problems except eating a character of mine because I set her home to Last Cave. :/ So I would suggest restarting your PC if it causes extreme crashing or lag. But go for it, do this glitch a lot! I do it too.
I've never been controlled, but I've controlled other users. They move around, too, thinking 'what the hay happened?' Just DON'T move around at the same time. And what I mean by that is, don't let the other person and you move around at the same time. It'll make you crash over and over again until you either reset the character's home or restart your PC or laptop.
~Cheers~
-SpringLeafles