I got it. Thanks BigE again. you just did me a great help in understanding skiing technique again.
He mentions why it does not happen in the upper half of the turn in the article, and why it is important to have parallel shins on turn exit.
It is not "corrective" because it is a goal. // shins on exit. parallel shins above the fall-line is unimportant. Parallel shins where the loads are high IS important.