[bts]

I am a "swinger" who has been trying to work on a few swing flaws: (1) Early club release resulting in club head ahead of hands at impact and (2) head moving forward on downswing.

Sounds like a right-hand-pushing, left-hand-pulling and pivot-sliding "switter" , which occurs 99% among "swinging" golfers.

For the heck of it I videoed my swing of the club using my left hand only on the grip (I am right-handed). Perhaps due to lack of strength, there was a noticeable bend of the left arm in swinging back the club and the downswing proceeded very slowly. But, the swing was very rhythmic, lag was maintained throughout the downswing, and the resulting impact position looked pretty darn good (I was not actually swinging at a ball, just the air; had a ball been there, I doubt it would have gone very far due to lack of oomph). Furthermore, I had no difficulty in keeping my head back. Because of lack of support from my right arm, I had to utilize a very pronounced weight shift back (with a definite hip slide) and forward (by time my left arm had dropped passively to the release point I already had what seemed 99% of my weight already on my left side and my hips were markedly turned to the left). My right knee had really kicked in to the target. These are not normally features of my two-handed swing, where I do not make such big movements. But these movements with the one-handed swing just came so naturally.

"due to lack of strength", yes, and the lack of the involvment of the right hand (pushing, handling and/or interrupting), the "Law" of "swinging" can thus be naturally obeyed, which takes care all the rest, as well.

I then tried to duplicate the one-handed swing swing using both hands on the grip but all I got was the same old results; something about using my right arm seems to impede these actions even when I try to do the swing slowly. It almost feels as if my right arm is too "short" and is impeding the swing of the left arm. On video it does seem as if the right elbow is getting stuck in my right side (10-3-A, the Punch?), which might be more appropriate for a hitter rather than a swinger. Perhaps my right hip is not clearing soon enough.

Here you go! Time to make it as pushing-passive as possible or as pulling-active (to help the left hand only) as posible.

I know this is not much to go on, but can anyone suggest why I might be throwing the club away two-handed?

Because you try to "hack" with the right hand, which is the daily habit used for years and tough to get rid of. If you make up your mind not to do it, however, and mimick the left hand action with both hands, you can overcome it.