Roy, are you even reading what people are writing here?
In the swing pictured on that site, his clubface is not "square to the arc." He's rotated his left wrist 90 degrees and the clubface is, as we've been saying, no longer "square to the arc."
It's rotated. Third accumulator. If he didn't rotate it, it'd be sticking out over his head.
Your right palm faces forward at setup. At the top of the backswing (rotated about 180 degrees), your palm should face directly backwards away from the target. It doesn't - it faces perpendicular to the target.
That's all anyone's been saying. Please read what's being written.