In order to crow hop, a pitcher has to leap first. Explaining the leaping rule was not necessarily incorrect. Fix the leap and there is no crow hop.
Not true, but granted it would be very unusual.
ASA - "A crow hop is defined as the act of a pitcher who steps, hops, or drags off the
Front of the pitcher's plate, replants the pivot foot, establishing a second impetus
(or starting point), pushes off from the newly-established starting point and
and completes the delivery."