I have corrected this issue from ever happening again. It seems however the issue did not effect users using IE as the trick would only make the user doing it be backwards.. but in Firefox.. things handled differently on viewing, thus other things were backwards, like everyone elses username on the whos online etc.
It was a minor glitch that is chaulked up into how html is displayed on clients.. but nothing per say of a forum exploit or so.. more like just using plain system and html handling to be stupid..
The issue should not come up again. Just wanted to give you a heads up. With that in mind, I have enabled the Change username again.