There are so many faults with his swing that anyone trying to copy it but born with less talent will meet his golfing career suicide.
Where do I start? Strong left grip, cupped wrist at the top, upright swing. The credit I will give him was the ability to slot the swing back on plane during the downswing with good hip clearance preventing a block. I don't know how he managed to do it but he is one hell of a talent to win despite of all this. Maybe this was what made him so interesting to watch.