Well there's a strange bug: the pointer keeps drifting directly to the right. Not sure how to mimic a joystick drift with a mouse, but that's what it looks like.
I've heard of it before. Now... hrm. Okay, so... do you have a controller plugged in? If so, try unplugging the controller. The game DOES have controller inputs. And I've had that happen once.
If that doesn't work, can you give me all your specs and any other info just incase we can use it to figure out what's going on?