I still am not sure that I disagree with anyone here. But I have had bouts with the shanks for years. I can flip flop between a 150 yard nine iron with draw to a 45 degree hosel rocket that dribbles 50 yards. I have broken par twice and I have a recorded a 73 tournament score. I have also shot in the 90's within a week if those scores because of the shanks that have crept into my play. I have ranged between a 4 hcp and 10 hcp with an 8 hcp mean through hundreds of rounds.
When they creap in, I just guard against them by making sure I cannot reach the ball with the hosel. This makes for a very flat swing and it has proven to be an acceptable fix.
The recent eureka moment for me was yesterday's lesson wherein I discovered I was rolling my right arm over my left BEFORE impact whilst losing all tilt and moving my head laterally toward the target. If you mimic that condition, you will see that the clubhead will be well BEYOND the ball at impact- assuming a normal address. But now I concentrate on leaving daylight between my forearms prior to impact with my left forearm on top whilst maintaining axis tilt and keeping my head stationary.
Now I can't REACH the ball with the hozel. I don't want to speak prematurely, but today's range visit was the best ever. I even brought out my butter knife two iron and was htting 225 yard stingers. Maybe I'll shoot 90 next time, maybe 80 or 70.
In any event, I can address the ball now directly knowing that I can't reach the hosel to it anymore if I swing this way. See this pic of Toms for my personal visual.
http://redgoat.smugmug.com/gallery/79609_nNLk8#2799824_acnB5-L-LB