Learn about this feature and where it falls into the positions.  This feature has to do with your back/shoulders and arching your back.  Or leaning back, remember not just your head but you shoulders and back must be arched.

This is a Sasha variation with an arched back.  Learn how to use the centrifugal force of the spin to gain speed in this position.  This is the feature as a haircutter so beware you never repeat this more than once per program.

You will then see great demonstrations of both of these variations.  The hairutter and the sasha leaning back both upright layback

This lesson is 2 minutes and 43 seconds.