benhogan54... yes, I think Ballard is one of the better teachers, and his book and theories are a must read. I don't think people should take his theories too far though, but they are important to understand indeed, and better than most. I prefer to focus on keeping my hands and chest turning together, rather than on stiff 'connection' of the upper arms... everything must 'flow'. If you take Ballard's ideas, and allow your body to flow with the club, your hands and chest will stay in synch naturally... "connection" happens given good balance and weight shift.
that said, many golfers would do well to focus on the left arm/chest connection, to learn the feel of the whole body turning through the shot, and what a real 'release' is.
Ballard, Hogan, Knudson, Snead... all have more in common than not IMO. They all understood the importance of balance, and how best to achieve it.