Thanks for revising this thread. If it had not been revised then newer members (like me) would have never seen it unless we were lucky and found it one day while searching.
This idea makes a lot of sense and I know that when my swing breaks down it has a lot to do with my right arm having too acute of an angle (just so we are clear, when it's said that your right arm is too flex this actually means that the angle of the arm is less than 90 degrees or at an acute angle?). As a result my swing is over the top usually because my right arm is not 90 degrees or more and thus my swing is not wide enough at all.
At times my angle of attack becomes too steep (also related to acute angle in right arm) and this obviously is not good for ball striking. The picture of keeping the right arm straighter longer has me envisioning a much wider swing with a flatter angle of attack which should lead to better ball first contact. I can see this improving my short game by leaps and bounds where I have been struggling with ball first contact and not having such a steep angle of attack? Does this sound correct?