A RHP fakes a pickoff to 2B after remains still engaged in the rubber. Now can he now turn and pitch to the batter?  1) How much time does he have to do it?  2) Could he immediately turn and pitch to the batter? What would happen if he did it that quickly after the fake to 2B? 3) I don't think he has to come off the rubber before pitching to the batter, or not?