Not that my comments count for anything, but from my POV, I don't think it's a huge fix for Tiger. Right now, his posture seems a little too upright, and he's pushing the handle out on the backswing, which is getting the club long and laid off at the top. All this is getting the club too far behind him coming down. I know he wants a flat left wrist at the top, but it looks bowed right now. Watching Tiger yesterday, you can see him really struggling to square the face up, trying with his body on one shot, his hands on another.
Not so coincidentally, I saw that Golf Channel show about Tiger's '97 win at the Masters. Tiger's swing looked better to me in some ways. He was sort of the other extreme- his posture was a touch more bent over, he kept the handle closer to his body on the takeaway, which got the club shaft steeper going up. This got him slightly across the line at the top, but he was also more compact. He had a little bit of a plane shift coming down, which I know he was trying to get rid of with Butch. Frankly, I think he could go back to doing some of the things that he did in '97 with his posture and hand routing on the backswing
In 2000, I think Tiger managed to get his swing in between what it was in '97 and '04. We all know how well he played. I just don't think that Tiger's posture and and backswing are matching up with his ultra-quick body speed. Brian correctly mentioned a while back that Tiger needs to be more in and up on the backswing, and I agree.
Folks, the guy's still head and shoulders above everyone else when he's on. If he makes some small fixes, I think he's still capable of absolutely vaporizing the rest of the field.