Originally Posted by comprex
Sort of see that.
You can create a downstem by countering too much. Basically, it comes from using a forceful countering move, rather than letting counter happen naturally though turning both skis more than your torso. What happens, is that by making a counter rotation move with the outside (downhill) ski, you over rotate the femur in the hip socket. The difference between this move and rotary pushoff, is that the skier isn't intenionally looking for ski edge to snow resistance, but is just trying to counter the hips, not realizing that they are countering too much and creating the downstem. With rotary pushoff, the hips probably are not very countered. With over countering, you'll see the hips being very countered, and also may see a countered position when the skier is facing down the fall line, which is when they should be squared to the skis (but not always the case).