So, I have the Duskfang/Dawnfang sword (pretty awesome). However, soon after i got it, and started fighting with it, my character randomly decided to block. Forever. I can't change weapons, or put the sword away, and I can't reload the save because it will still do the same thing. It's making my movement extremely slow. How do i fix this? (I'm playing it in WIne v. 1.3.5 if that helps.)

Got any other game controllers plugged in?

Find your oblivion.ini, find the setting

buse joystick=1

change it to zero.

See if that helps.