butt behind boot
???
Erase that from your list.
Your outside leg is near-straight. Your inside foot is tipped way up on its little toe edge, and tipping more and more as the turn progresses. Your inside leg is deeply flexed, and deeper flexed as the turn progresses. You're able to momentarily lift the inside ski off the snow to test your counterbalance. You
allow your inside knee and hip to go toward the snow but there is no effort to push them toward the snow. Your inside foot is pulled back, trying (unsuccessfully, but trying) to keep your toes or tips even. Your hips & shoulders are twisted toward the outside of the turn very early in the turn and as far as possible. Your upper body is counterbalanced toward the outside of the turn. Your arms and hands are in the position you see in Max's avatar. Your pole tap is merely a tap caused by a flick of the wrist. Your release of the turn is just a relaxation of the old outside leg where you flex it and tip that foot up on its little toe edge while the tension in your body relaxes and pulls you across your skis while you
allow your new outside leg to extend--you're now turning the other direction and you repeat the movements with the other side of your body.
Note the things we don't DO but we allow to happen.There are slight variations to these movements for different snow conditions and different speeds and turn radii, but these are the basics.
Flexion?--that's when we flex both legs to absorb a bump, not an action to turn.
When coaching and the student gets the movement right, I ask just how they did that and how to express the description of the correct actions in their own words. Later I suggest to them, or ask them for their suggestion, of what movement they want to work on and how they'll achieve it. If needed I'll correct their description of the actions and send them out to make correct movements, one movement at a time. Get tipping right. Then get tipping and flexing right. Then get tipping and flexing and inside foot pullback right. Then get tipping and flexing and pullback and counterbalance right. Then get tipping and flexing and pullback and counterbalance and counteracting right. Then get t & f & p & cb & ca and the release right. Then all the others plus the pole tap (or maybe learn the pole tap before learning the release).