If you’re interested in Jack’s “Golf My Way” video, you can find it here on Youtube. The overhead part from which I took the below shots to make a couple of Gif.s is at 45:00 of the video.
I like this view for what it shows, and it proves three things about a proper golf swing, because Jack’s was as close to the optimal swing as you’ll likely find from the PGA Tour, with just some setup flaws that affect the motion.
First off, before I even address the points I intended to make about this overhead shot, note how stable Jack’s head is on the back pivot – anyone who advocates moving the head on the back pivot did not win 18 majors on the Tour.
Just looking at the swing from above shows you one very noticeable thing if you look for it – Nicklaus releases the club into the ball and if you showed anyone else doing this in the Modern Golf Swing world, this move would be denigrated as “flipping” or “flippy” through the ball.
No attempt to hold off the release or create a bowed left wrist – he simply cocks the wrists on the back pivot and then releases the club at the swing bottom.
When I draw target lines, you’ll see something else that BM mentioned – the clubhead moves inside the target line right at the beginning of the pivot, so there goes the whole “increase the swing arc by taking the club up the target line going back” nonsense as well:
Note as well that if you draw a line 45 degrees down from the ball to the stance line, that is approximately where the clubhead is as it passes the stance line – those of you who remember my “swing angle” concept will remember that I said the optical illusion of the club traveling in an arc actually makes it appear to be going back on a 45 degree angle:
… which is why I said that your “swing angle” watching your hands would be about 45 degrees!
Another thing you can see is that Jack used a power fade instead of opening his stance and cutting across the ball – this is why a power fade flies nearly or as far as a straight shot.
You can see that Jack did exactly what he said to do when hitting a fade – pick a target left of the actual target, then set up to that left target and swing straight at it with a slightly open club face, which then fades the ball to the actual and intended target.