If you do not throw around your skis at this moment you will land on the tails, and soon after you will fall. There are several ways to get out of an aft state, but in this particular state I don´t see any other way than to pivot.
Deeper understanding is needed, and appearances deceive, Jamt.
First, as I have already noted, this particular turn in question was a turn with whatever amount of pivot it had. Hirscher was in balance, and made a great turn. Of course
you cannot just make one hypothetical change--like "what if he did not pivot?"--and expect the rest of the turn to work out the same. If you want to discuss a turn with no pivot, look at a turn with no pivot! (On the other hand, please do note that a corrected version of the montage, with the frames accurately registered, shows that the pivot was not nearly as obvious or pronounced as it appears in TDK6's "stretched" version.
(This is not to suggest that he did not pivot at all, and certainly not to suggest that other turns do not or should not show very active pivots.)
Second, if we must get hypothetical, let's imagine what would have, or could have, happened if Hirscher had not pivoted in this particular turn. Yes, the skis would have continued even further out away from him for a longer time, making him appear even more aft. Yes, if his body and skis had been on the same paths, he would simply go straight and perhaps "wheelie out" of the course. It happens now and then! However, his body and skis were NOT on the same paths--their paths crossed at the transition, and as his feet went more quickly across the hill, his body (CM) moved more quickly down the hill (in a straighter line). The pivot in this turn (subtle though it actually was) allowed him to engage his edges "early" and carve around the gate. In a different scenario--with the gate perhaps more offset--he could have avoided the pivot, allowed the skis to continue to run further across the hill to the new gate while his body continued down the hill to the inside of the turn, and engaged his edges later
than he did here. The prolonged float phase/delayed edge engagement would have (could have) allowed a very clean edge engagement at very high edge angles, somewhat later in the turn. This happens now and then also--quite frequently, actually!
As a common side-effect of this non-pivoted, delayed edge engagement, initiation, you will often see a delayed "weight transfer" as well, with the inside ski engaging first like the classic "white pass turn." Makes sense, doesn't it?--as I've previously described, this principle is more accurately discussed as a lateral,
rather than fore-aft, movement. It is the skis moving over to what will be
the skier's right for a left turn. That it takes place largely in the transition, when the skier and the skis are traveling across the hill, makes it appear
to be a fore-aft thing. But when you factor in the "balance in the fourth dimension" understanding (during the float phase you are more-or-less airborne, so movements there must be considered only as to their effects later in the turn, when pressure is re-established on the feet), you would expect that exaggerating or over-doing the move would result in your body being further inside the turn, resulting in balance on the inside ski for at least a moment.
But why get hypothetical? Let's look at some real turns. Perhaps this video clip will help. EpicSki Academy director CGeib once remarked that, when making dynamic short-radius turns, he felt as if his body was like a heavy medicine ball being thrown around by his skis, tossed back and forth on its S-shaped path, at times floating free across the hill, at other times strongly re-directed through powerful force originating from the skis on the snow. A great image, I thought! I created some rough animations and combined them into this video clip a year ago, to help visualize and explain the phenomenon. Beginning around 3:10 in the video, you will see many examples of great transitions, including the "white pass-like" delayed weight transfer I have just described (see around 3:33 in particular). The race was a Noram Giant Slalom at Keystone, won by Eric Schlopy whom you see in the opening sequence and elsewhere.
Transitions--The Medicine Ball from Bob Barnes on Vimeo
This clip, with the animations, clearly shows that during the float phase, the "catcher" (skis) must move underneath the "ball" (body/center of mass) and get "ahead of it" to be in position to catch and redirect again. If you consider the visualization deeply enough, you will recognize that it also explains turns with "extension" transitions as well as "retraction" transitions--it's all a question of how fast thing things are moving, how much time you have for your skis to make the transition, and how much time you need for that transition. Need more time?--low speed, gate more offset, whatever--extend and give the "ball" more loft and float time. Going fast and need a lightning-quick transition?--retract, throw the ball "flat" through the float phase.
Happy 1/1/11 New Year, everyone!