Many fellow ski instructors don't believe you can make turns without rotary turning of the legs, a top level national demo team member just posted on facebook a video of Mikaela Shiffrin who we know does not turn the legs to turn. No wonder the lower level instructors have the wrong idea. My wife and I just spent the weekend working with a friend on short turns without using rotary turning of the legs, he could no believe the change in his skiing it made.
Quoted from a national demo team member on facebook "Stand on your outside ski and turn your legs. Need a demonstration? Watch this."