Back to the unhijacked topic:
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As PU, it appears both hands are together. She then "separates", swings both arms upward, then brings both hands together above her head, brings both arms down, then separates and starts her pitching windup. (Hopefully, you can get a somewhat good visual from this). I call IP."Good call and thank you for having the sense and courage to call it.
I think it's pertinent that some rules, like joining the hands and only joining once, exist to reduce deception of the batter, whose view is the same as the PU. So if it deceives the PU, it would seem to deceive the batter, illegally.
p.s. Have you found a hit man for your partner?