Oh, forgot to mention, NO FOUL if the result of the play is a touchback, or if the kicked ball goes out of bounds, or if there is a fair catch. Mechanically, Mr. R, you can 'hold' on throwing until the ball is in runback, or throw and then pick up, with a 'never mind' announcement, in those no foul events. Me, personally, I will probably 'hold' until the ball is in runback. CFO coordinators might want their R's to throw, then pick up, to know their R's saw the action, and consciously (and correctly) rescinded the call. Do what your coord wants.
Robert