The character sheet often appears to be extended off of even slightly off dismount of carriage/wagon/cart
try http://mlbs.slipcor.net/ player model reset for this, and if your horse/wagon are out of control, try the other Alpha 82 save fixer.
You'll need to quit out to use it though, Which I would suggest you do after sleeping, and saving, so that your sleep schedule isn't thrown off in game, at least, not by too much.