Sweet Spot Plane 2-F GM#67

[Yoda]

So... if the clubface is open or closed here, the sweet spot is off plane?

The Clubshaft rotates around the Sweetspot, not vice versa (2-F). Accordingly, the Clubface can be aligned Square, Open or Closed and the Sweetspot remain On Plane. The Clubhead (Sweetspot) Line of Flight (2-N-0) and the Clubface Alignment (2-G and 7-18 ) have (and deserve) their separate identities.