I guarantee you have heard the phrase "lost his spine tilt" or "early extended" during the swing on golf telecasts every week. In part 1 of this video relating to Spine Tilt I discuss the phrases and the reason why it tends to happen.
Eye dominance is rarely considered in a players makeup and should be as it affects the way we see things and will play a bearing on alignment and release.
Impact is about force. Not just force of the swing and clubhead at impact- but more the act of spitting the ball out of two forces. Into impact & Beyond Impact.
Holding shaft flex for as long as we can into the hit can really be the make or break attitude for the golfer wanting to break out and become really good.