Two very experienced professionals; 2 completely different interpretations of the ground conditions:
David Price: "I just didn't have any question it was a bunker, and had there been a question, he should have asked before he proceeded."
Dustin Johnson: "Obviously, I know the rules very well. I just never thought I was in a bunker, or I would have never grounded my club. Maybe walking up to the ball, if all those people hadn't been there, maybe I would have recognized it as a sand trap. I knew there wasn't any waste bunkers. But all the bunkers on the course had a darkish color to the sand. This was white dirt."
By David Price's own reckoning, the hillside was chaos... "It was very chaotic," Price said. "This was a very difficult situation based on the topography. There was a very high hill, completed filled with people, because once the grandstands on the right side of 18 filled, this was the only place people could see the green from. The hill was filled with people, and the other side of it was very steep, so people couldn't back up and go down. The marshals did the best they could, but there were probably 3,000 or 4,000 people on that hill."
Having recognized the chaos, David Price should have had the situational awareness to (A) either remove all people from the bunker in order to provide DJ with the opportunity to interpret his ground condition - or - if the hill was so overcrowded that everybody could not be removed from the bunker then he should have (B) informed the player that his ball was lying in a bunker/hazard but that he could not safely remove all the surrounding people from it.
Instead of A or B he "asked Dustin if there was anything he needed, if there was anything I could do."
Dustin Johnson owned the situation and he copped the 2-shot penalty and lost over one million dollars prize money for the mistake.
The PGA totally lost control of the hillside and David Price failed in his control of the immediate vicinity of DJ's golf ball. If the ball came to rest up against a piece of litter in the same exact spot you can be sure Mr. Price would have been there to offer his professional guidance as the group's rules official. Instead he left the area around Johnson's ball to walk 30 yards toward the green and help clear a wider gap on the right.
A real sad confluence of events that unfortunately fall completely on the big shoulders of Dustin Johnson. He handled it with real class and I hope he goes on to win many majors in the future.