Keep it cool, let it go. Search the net for answers if you don't know them. Just do not go straight to his bait.
First, he needs to justify being a Jerk. Second, he needs to behave like one and say these things to you, just to bother you. Third, expect he will act like a Jerk, sound like a Jerk, talk and even walk like a Jerk, because right now he is a complete Jerk.
Just try to ignore his Jerkiness for now and he may stop since it does not work on you.
If you can not deal with it right now, then you can say: "I can mail it to you or you can pick it up next time you see the kids". His request, his problem.
He does not tell you what to do, he is not your father, he does not criticize you period, he is not and will not pull anymore strings on you. You are not his toy, you are a human being.
