You (or someone else) must have changed interface hotkeys settings for that toon - or it even can get corrupted whole file.
As suggested before, delete profile file in Runes of Magic directory under your documents folder in windows. (It might be hidden - to enable to view it in my computer windows, click alt (to view menu if not showed), go to Tools >> Folder Options >> View (tab) >> Under Hidden Files and folder select 'Show Hidden Files, Folders and Drives'.
While you do this, make sure you don't have RoM client running. Start client and load character, let us know if you still have problems moving your character.
Aw shoot. I did what you said but no folder with my toon's name is showing up. I realized that I still had client running while I was doing this though since I was trying some of the other stuff that people suggested. Now I can't get the hidden file to show up anywhere, at least I didn't find it. Was it because I had my client still running and is there a way I can still get it to show up?
BTW: Thanks everyone for the suggestions. Opening up a chat window didn't help, neither did switching gears.
Yes, I have tried relogging, even restarting my computer. lol.
The problem is not that I'm stuck in a stance, and I can still cast all of my skills and engage in combat. I even dueled someone and won. I can basically do everything in game other than move, if that helps.