Pick interpretation

[ColdShot]

I used to post here, but I forgot my old handle :-(. Anyway
here's a question:

Offensive player sets a blind pick behind the defender. Defensive player pivots on the left foot to start up court and collides (face to face) with the offensive "screener" before the right foot lands. Is it a foul? On whom? Does the pivot count as "a normal step"?

Thanks!

Bill

NCAA (http://www.ncaa.org/library/rules/2004/2004_basketball_rules.pdf):
"Section 20. By Screener
Art. 1. A player shall not cause contact by setting a screen outside the visual field of a stationary opponent that does not allow this opponent a normal step to move.