It's in the article Paul...it's a long Othello...I agree with you on the rough, but so do they and they are thinning it out.
Short story, he had a green chair that ascended to he presidency that heard about Sand Hills and saw Whistling Straits. He also had a good super in Brian Benedict. Finally, the shaper Ken Wagel worked on it too. They stuck to his master plan the first year or two, but after that the four of them were about 25% each. With the exception of two bunkers that are dreadful - see the pix in the article, OMG! - and the rough, they got a lot right, including getting rid of 3,000 trees.