In my video of Scott he has MUCH less of this upward 'bow' than the photo of Nicklaus or the diagram of Hogan. That may be due to modern shafts or lighter clubheads.
You caught me cleaning my office so I can't find my collection of GD foldouts but looking at the one of Sergio note that there is the 'expected' bow of the shaft when it vertical in the downswing and this bow is completely gone (and perhaps slightly bowed up) at 6/100s. While not as dramatic as the Nicklaus photo it is an indication of the direction of forces.
