This photo is from yesterday's women's World Cup Slalom in Aspen:
While the wild left arm is a bit hard to ignore, it appears (to me, anyway) that from the waist down she's doing everything pretty much right. Both skis are fully engaged from the tips all the way back, they're both tipped at essentially the same angle, and there doesn't appear to be any appreciable tip lead.
Her center of mass is probably headed a bit to viewer's left of the line formed by that bent-over gate. Because it's a slalom race, she most likely has to "transfer" over to the new edges in about half a second (it takes me about half a second to type "me"). She's pretty fully extended in this photo.
Sometime an instant or two after this photo was taken, she's going to have completely transferred from the edges she's on now to the new ones.
So here's my question with regard to this thread: What happens next?
Does her upper body come up at all as her center of mass crosses over the skis?
Does she just start extending and tipping the right leg a fraction of a second after this photo was taken, at the same time flexing the left leg to let it ride up inside?
Or does she flex *both* legs for an instant as the skis pass under her center of mass?
How in the world do her hips get from where they are at the moment of this photo to where they'll be less than a second later as she's fully extended in the next turn?
I wish there were about twenty more images of the next few fractions of a second.