Sorry, but this is all very confusing for me but I'm trying to muddle my way through. tonight my son was pitching, 15-18 y.o. rec league, with Runners on first and third , and stepped towards 3rd with a legal pickoff move and faked the throw to Third. He spun around [ obviously disengaged from rubber] and thought of throwing to first but did not. The umpire called a balk. I yelled that he didn't know the rules and he told me I was wrong.
He was wrong, Correct?? [ the bottom line is: in high school baseball one can fake a throw to Third if making a legal move in that direction. Once disengaged from the rubber after that legal move and fake towards 3rd, it doesn't matter what he does after that [ he can fake to first also, throw to first, or do jumping jacks]