[Daryl]

Shaft lean can be managed, but it requires an understanding, and maintaining, of the bent right wrist angle. Couples and Daly both let that right wrist angle go on the full swing (but notice Daly in his short game, one of the reasons he is so good around the greens).

The turned left wrist is 'insurance' against throw away at the extreme (see Alex Morrison), since it is physically impossible to let the club pass the left arm with it turned so much.

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10-2-D Grip.

If the Clubhead doesn't pass the Hands before Ball-Clubhead separation, then the Law of the Flail has been complied with. However, if the left Wrist uncocks a degree from Impact to Separation (impact Interval), it is technically Throwaway. Swinging from the Wrists, Loss of the Primary Lever, Compression Leakage all proportional to the amount of Uncocking during the Interval. With Short Shots, they don't need to Cock the Wrists so the Procedure is acceptable.

Couples and Daily are great players, best in the world, but laws are laws. The Pro's break laws all of the time and mostly get away with it. It's the "Law of the Pro"; = 10 hours a day on the range for 15 years and you get really good Hand/Eye coordination.