My take on it is that he won the race which is the whole idea of the exercise. See the first post in his build log
http://www.gt40s.com/forum/gt40-build-logs/22164-rf-117-a.html
He knew what he had to do to win that race and did it. There is simply no point in forcing an issue in a corner and risking a DNF when he didn't have to....
Also with the front of the GT40 being so low you really need to get your roof section alondside their front guard before the turn in point or they are unlikely to see you and turn in and take you out. Why risk it when you don't have to?