Here are some more photos this time with a longer iron. You'll note in the down the line frames 10 and 11, that he has released the club more down the line and is not "swinging left" as he does with his shorter shots. His right wrist angle has straightened out a little due to the heavier forces upon it maybe?
Im still wondering about these releases but maybe this is best left for its own thread. I do however remember him saying once after he hit a short iron slightly long, "Ahh, over released it".