LEGAL WINDUP?

[mg43]

Yesterday afternoon our JV High School team faced a pitcher who had a very unusual windup. I'll do my best to describe it. She started with her hands separated followed by a rapid 180 degree counter-clockwise wind up with her arm fully extended. Then she quickly touched the ball to the glove which was held in front at the waist. She immediately reversed the motion to a typical windmill style and delivered the pitch. She didn't move forward until the motion was reversed. I am having difficulty finding any rule violations. Did this wind up violate ASA Section 3. A. (The pitcher must not make any motion to pitch without immediately delivering the ball to the batter.)? Any other violations? The reverse wind up was very effective in disrupting the timing of our batters.

Thanks for any help you can offer.