It makes sense to me. A while back, BrianW posted a link to the ritson-sole website, where they talked about cupping vs flat wrist. In the ritson-sole video, he stated that a strong grip needs cupping, while a neutral-to-weak grip needs a flat wrist.

So lets assume AJ needs a strong grip to go with his cup.

The thing that he's trying to do is to whip the clubface through impact... it seems like it's a real timing-based swing. It reminds me of Greg's 'swatting' reference - great if you can time it, brutal if you can't.

The other 'theoretical' point that AJ DOESN'T discuss, is that if cupping the wrist opens the face, then having it flat at impact must close it, right?

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A new highlight: Golfing the home course on Christmas Day.

I say it too often: If it's golf club shaped, you can play with it.

For the record, I'm a club doctor, not a swing doctor.