First of all I don't expect him on my lesson tee any time soon. Secondly when you look at swings this good,as in functional, what we learn is how he matched his components, not what's wrong with it. There are about 50 million golfers in the world and MAYBE a dozen or so hit it this good. So i look at how he put it together. I'd say he has chosen to take the left side out of play with a weak grip and a vertical move allowing him to release it more freely. Matching components. Yes he's erect at set up but at the top he has increased tilt. He has a great vertical drop and a tumble back onto the plane from a laid off position, Another matching component. Lesson? Work on your putting and confidence Ian.