Pat:
Are you actually asking me about the "flying elbow?"
Look, Big Fella, over the last 10-12 years I've taught you all you know about golf architecture and over that time you've only retained about 10% of what I know!
So now you're asking me about the golf swing and the "flying elbow" and when it went out of standard practice?
Pat, as you say, some great players like Miller Barber, Nicklaus, Freddie et al had a flying elbow, and I'm sure there've been teachers who said it was a very bad thing to do and a basic dunce like you probably listened to them or even paid them good money to teach you not to do that.
Listen, Patrick, the "flying elbow" thing that some say one shouldn't have is total BS. The Flying elbow for great players only happens on the upswing or backswing and nobody ever hit a golf ball with their backswing.
Just look where the elbows are of Barber, Nicklaus, Freddie et all who have flying elbows on there backswing when they are coming into the downswing and impact zone with their arms! Have you ever seen a great player's right elbow flying at that point?
You are a disaster Patrick, and I give up as your teacher. As far as I'm concerned you should spend the rest of the year in a corner of the classroom with a Dunce cap on!