Is "Dragging the Club" Back Okay?

[rwh]

For my Swinging Procedure, I'm having a lot of success "dragging" the club back at start up. I use the Classic (Mid-Body Hands) Address. The bend in the Left Wrist actually increases and the Right Wrist arches. When the Wrist conditions reverse, I'm feeling a ton of Lag that I haven't previously experienced -- a much more satisfying and "heavier" feeling that I'm better able to drag back down through the ball.

This "seems as if" it should be a good thing, but I can't locate where the book speaks to the technique. Am I on the road to ruin or is this "drag back" technique acceptable?