Replies to 'Co-Parenting'

Ignore the threats. Period. End of sentence.

Your ex- is threatening you now b/c it has worked in the past to get what he claims he wants. I would keep EXTREMELY close tabs on son's whereabouts these days. It would not surprise me if there are plans on Dad's end to take the boy and run, having that accusation against you as "justification." (sounds like Dad didn't like the "new world order" imposed 2 yrs ago when you got joint custody - boo-hoo!)

You & your lawyer should check what your decree/state law says, but generally you have the RIGHT to telephone contact with your son when he is with Dad, just as Dad has those rights when son is with you.

Lean on your lawyer. HARD. That's what you are paying him/her for. S/He will advise you if the situation warrants further mediation/court action.