He had a two shot lead with two holes to play. It was a 330-yard hole. He could have just hit a six-iron to a comfortable wedge distance and taken all risk out of the hole. Instead, he tried to drive the green on a hole with water near the green? It might have been an unfortunate bounce, but it was a horrible decision.
Gipper did the same type of thing in the episode where he was eliminated, so it appears to run in the family.