Thanks for finding that Chris.
You guys have no idea how many times they had to shoot that scene of Kirk "mooning the chopper" (edited out for the TV version). The cameras kept picking up Kirk's "third leg", and all the women who got a chance to view the daily film results where just glued to the screen.
For what it's worth, Kirk did ALL his own "stunts", including his own body building/weight lifting scenes in the movie. Shaking hands with the various actors was a real contest of hand strength when it came to Mr. Douglas. It was like shaking hands with a vicegrip, and some of us had great fun trying to best him. I don't think Mr. Douglas expected to be shaking hands with a bunch like us, who tried to give him a "run for his money" when it came to shaking hands.