I recently watched Patrick Reed win a tournament, Humana Challenge i believe, and listened to the talking heads criticize his left foot release for the entire 4 days, while he proceeded dominate the field through the first three. This brought some attention to my own release as I always finished with my left foot, toe pointing out. It never bothered me and the few swing reviews I have had never brought a focus to it.
What i did realize is that i am protecting my left knee. I have damaged it in the past to the point that i can't drive manual transmissions unless the clutch is hydraulic to overcome the pedal pressure. So a golf swing could create issues with my knee. Stack and tilt swing is out of the question. I can load up on it to a point but the twisting on the release is not going to happen.
My point is that i notice that on my follow through, after impact, I tend to point my left foot up allowing me to rotate on my left heel as my body comes around. This allows me a full follow through without having to make any adjustments other than my left foot stance. I have no issues with balance, aim, power, etc. If i try to keep it planted, the pain i start experiencing starts affecting my release. I think i mentally start limiting my release to prevent messing up my knee. I have seen other guys with similar issues and noticed how they shorten up their fore swings to prevent over extending their knee. I haven't mentioned anything to them as it's probably not my business but i thought i'd ask around the opinions of the post if they have ever come across this idea.
Just a thought for those struggling with age and possible knee issues. Maybe its worth thinking about allowing that left foot out like Reed does.