[YodasLuke]

In the most recent golf world magazine, AI Chuck Cook analyzes Hogan's swing and indicates his key to accuracy was the left arm moving left of the body quickly after impact. Is this a reference to the finish swivel as outlined in this thread or something else?

I would have to say, "something else". I have not seen the article so take my advice with a grain of salt. From what you've explained, it sounds like tracing the Arc of Approach. Homer said it was an inferior procedure to the tracing of a straight baseline. I think when Homer was asked if one could trace the Arc of Approach, he said, "...sure, but why would you?".