Originally Posted by RickS
The lead skier was making nice pivot turns with a clean initiation; the skier at the 37-second was initiating by stemming the outside ski ("pushing").
If an instructor taught a "stuck" intermediate the former, it would move the student toward making strong, balanced parallel turns. If the latter, it would reinforce movement patterns that tend to keep them stuck.
"[N]ice pivot turns with clean initiation" doesn't describe the movement.
I've watched the video 3 times now and see no evidence of any undue pressure or "pushing." (You can't even see the second skier's boots or skis at the cited 37-second mark.) I do observe a very brief delay between the skis in the second skier's (Kent Lundell?) edging/rotary movement, but given the task and the conditions this isn't surprising even in a highly-skilled skier.
BTW, Mather (the lead skier) also uses a sequential movement, only in reverse: Hence the diverging skis we repeatedly see. Probably intentional, but in any case an admirable demo.
Lastly, I suppose you can teach anyone anything, but I don't usually advise my intermediates to skid more, which is what a proper pivot slip entails. Since most skiers skid plenty already, I'll usually start by showing them how to move their bodies downhill and get on those new edges earlier. This helps produce turns with less effort and skidding, especially on newish equipment.
Getting a skidder carving makes for grins every time.