No I didn't read the entire thread. (You can't become a Masta Threadjacka if you read the entire thread!!!)
The "far more acute angle " as seen from face on (when the player is at the top of the swing)is the #3 accumulator angle. It's always been there, however the player has essentially turned the #3 accumulator angle so that you see it from your face on perspective - plus any wristcock. At address, the person viewing the golfer from "face on", doesn't see any #3 accumulator (although they would if they were looking down the target line). It creates an illusion that there is more movement (wristcock) than there really is. (1-C)
Here is a pretty cool down the line video of Rory Mclroy releasing.