(Note: I was tempted to skip this one because I'm not really trying to say much different from what has already been posted - great job guys!)
There are a lot of things to love about these turns. You carry a lot of speed laterally across the slope. You're getting some great edge angles and some great angulation. I also like the edge engagement above the fall line. This is fun skiing.
Things to work on:
1) up move initiation - it's not the typical "pop" move, but you do get taller, let the legs float underneath, then sink the hips down to get the new edges to engage. I thought this section showed it a little clearer because it was a close up.
The down move in the last frame is exaggerated because of the way I cut and pasted and because I added a little extra delay for emphasis, but it's the same thing Skidude is talking about. The down move leads to #3 below.
2) Too much bend in the waist
We want to see more of the weight in between the red lines.
(the tip lead pic below also shows bending forward)
3) Humongous tip lead=too much weight on the inside ski
This causes outside ski divergence.
What I want to see instead:
1) Standing taller
2) Steering into counter at the end of the turn
3) Pulling back the inside ski
Here's how to do it:
Think about exposing your belly button to the wind while you are making your turn. This should get you into the position you are in in the 4-5 next to last frames of the animated sequence throughout more of the turn vs just the start. (taller)
off snow exercise - Stand with your feet pointing straight ahead and move your knees sideways. Note the feelings on the edges of your feet. Next turn your feet 45 degrees, then move your knees in the same direction again. The more powerful edging feeling on the feet is what you want to add to your turns. (develop counter)
poles around the midsection - hook your poles around your midsection - strap holding grip. Try to make medium radius turns keeping the poles pointed to the side of the trail. Let your turn finishes steer you into a countered position.
shuffle turns - shuffle your feet back and forth all the way through the entire turn (reduce tip lead)
"phantom" like turn - pick up the tail of the inside and lead with the inside knee and the belly button tipping the new inside ski tip into the new turn(putting it all together)
BTW - undercanted = knock kneed. I'm not sure I see this. I do see some weird positions of the outside leg below the knee, but I think this partly just his pants in the wind and partly illusion from the diverging skis.
The only shot that give you a real good frontal view for checking this looks a tad knock kneed, but could this be because the stance is a little wide and in a tiny wedge?