Great sight Allen, thanks!
I did the tests outlined here:
I failed the Hip Windshield Wiper Test rather miserably which probably explains my tendency to stand up through the downswing. They call it early extension. I did well on all of the other tests though. Bob Pritchard told me in an e-mail that back pain was often caused by lack of hip flexibility so I have that going for me too. LOL, a hopeless case perhaps? I have been doing hip stretches for years though I am going to increase my efforts in that area.