[O.B.Left]

An On Plane Clubshaft -- actually, per 2-F, the Centrifugal Line of Pull from the Sweet Spot to the #3 Pressure Point / right index finger, for which the Clubshaft is a suitable proxy -- always points at the Baseline of the Inclined Plane unless they are parallel (1-L #6).

The only reason to Rotate the normally Square Baseline (10-5-A) to the right, i.e., into a Closed alignment (10-5-E) is to produce -- depending on the Clubface alignment at Separation -- Hooks, Pushes and Pushed Cuts.

The false notion that the Baseline of the Plane must 'shift' to the right during the Downstroke is a holdover from the error in Ben Hogan's Five Lessons (pp. 87-89). It was wrong then, and it is wrong now. The Clubhead Orbit does not shift from a Square Plane Line to a Closed Plane Line. Instead, it continues Down-and-Out on the same Inclined Plane through Impact. With the Ball positioned prior to Low Point -- opposite the Left Shoulder -- this does indeed result in an Inside-Out Impact (Hogan's stated objective). But . . .

It does not result in an Inside-Out Stroke (Hogan's unfortunate explanation). Study 2-J-2.

In fact, in all geometrically-correct Strokes, Impact is always 'Inside-Out', i.e., Downplane through Impact to Low Point (1-L #13 and #14). This is true whether the Plane Line is Square (On-Line Stroke), Open (Outside-In Stroke) or Closed (Inside-Out Stroke).

Nice. This with a little post Low Point extrapolation also answers the question "When are we swinging left?"

Any perceived references to a trade marked swing methodology is purely coincidental or resides inside the head of the reader solely. Swing Left yes but On Plane, post Low Point when the club head is traveling Forward, Up and In but the Thrust continues towards the Plane Line, Forward , Down and Out to Both Arms Straight. Per 1-L-10.