If you read more of the post,
you will see that the whole ski is being pulled into the snow while some rotary torque is being applied to keep the tip engaged along with guiding the ski along an arc. I really don't think anyone has the rotary strength to rotate an effectivally edged and weighted ski enough to make the tail breakaway and cause a skid as you are implying unless they are going 2 mph on a pair of 80 mm skis, and even them b/c the ski is so flat on the snow. I am talking about dynamic sking on hard snow. It works for the world cup skiers.
|So, increase pressure along the edge of the ski in front of the boot and decrease pressure along the edge of the ski behind the boot. Sounds like a great way to cause a skid.|
|Stated differently, on a steep ice slope, the outside ski is pulled into the surface (rather than pushed against) using rotary touque by exerting the aductor muscle group.