I watched this three times and didn't see much wrong with it. Your feet seem a little far apart, so your knees don't exactly track your thighs...but honestly, I don't have much to critique on.
In terms of the bar rolling around, you might consider holding the bar in your last few fingers a little more...it seems like you're basically "palming" the bar. I don't know...I didn't see much bar movement, but I can't feel from a video.
Some problems here. First, I need to see the entire set up, from your approach to the bar on.Deadlift - 335#
I would like to set my upper back a little harder based on comparing videos from lighter weights, and the fact that it feels like my back is rounding. But they still feel pretty good for the actual increase in weight.
http://www.youtube.com/watch?v=ZQNvkIyQ_es
But the biggest problem I see is, it looks like the bar is too close to your shins. Your shins are basically vertical when you begin the pull, so it's more or less all back. So...
(1) Before you bend your knees, take your grip, etc., make sure the bar is about an inch from your shins when you are standing straight up.
(2) Try narrowing your stance just a couple inches and point your toes out a little more. I think you'll have an easier time setting your entire back before the pull that way.