[MizunoJoe]

Hogan's plane - the pane of glass was just an upper bound under which the club head must remain. In the second pic, you have correctly traced the elbow swing plane in red. But in the last two photos, you have traced the shaft, not the Sweetspot Plane which goes through the ball, and under which the hands lie, and this happens even though he has very high hands through impact. Also, that's not impact in the left photo - his hands move dramatically left at and after impact. There are many rotary swingers who's left wrists are not quite uncocked to the level position and so their hands are much more under the elbow swing plane than Hogan's.