A few years ago Epic, a member here, started talking about "foot squirt." In struggling to understand what he was talking about, I concluded this move was it. I was never sure.
What I see Ted doing is manually (primarily by opening his ankles - and also his knees/hips if necessary) shooting the feet forward in front of him, tips pointing towards the side of the trail, at the very very top of a turn, while allowing his upper body to fall sideways into the turn. I've worked on doing this for the last two years, just to see what the results are. It increases (for me) the time spent and distance covered above the fall line in relatively short carved turns. It also aides in getting very high edges early, and bending the skis accordingly.
It could be what Epic was talking about. One thing to remember when analyzing footage of high level skiers and especially racers, they are not balancing the same way that the bulk of the advanced skiers on the slopes are balanced. Most skiers balance by means of stability or feet up through the kinetic chain. They are dependent on the base of support to hold. High level skiers transcend balancing on the skis to balancing over the skis. They are balancing around the center of mass in a 360 degree sphere. The skis are often part of their center of mass as is the case for frame 4. Skiers who balance this way often look like they are skiing in a series of linked recoveries when in reality they feel well dynamically balanced.
For most of the turn Ted has very little pressure on the skis because he is after the fastest shortest straightest line with the center of mass from gate to gate. His cm isn't really falling sideways, the skis are doing all the moving. Since the skis must travel a much longer line than his cm he allows his feet to reach ahead and get a head start very similar to reaching the feet forward in bump skiing in anticipation of the next bump.. There is a lot of pivoting and reaching out to the side. He has it timed so the cm and skis are close to having parallel paths when he engages the edges. Having the skis pointed in nearly the same direction as the cm is moving prevents the dreaded chatter, the ski edges engage instantly and the pressure builds fast pushing the cm as tightly as possible around the gate.
If you are balanced over the skis as opposed to on the skis you are free to do things like reach both feet out without much of any pressure just like you would reach one leg out to the side while standing on the other. The center of mass is quite literally falling for a much longer time that most skier would be comfortable with. I suspect the squirt referred to is part of accelerating the cm (like pump on a mountain bike ie frame 3) and the initial lofting of the center of mass in anticipation of reaching the feet and legs(frame 4). Recreationally this is a fantastic way of putting your skis over on high edge angles in order to ski on steep groomed terrain you normally wouldn't ski with high edge angles and clean arcs.