WR, Breathe! He's going to try every angle to make you look bad and it's called deflecting. Instead of telling your lawyer that you've not done these things again, I would sit down, craft a letter and give it to her. She needs these things in writing now. Reassure her that you are not discussing anything on the phone in close proximity as to where the boys are and if they are listening in at the closed door, you don't have any control over that. Besides, your sons are old enough to put two and two together to figure things out w/o being told.
Have you ever mentioned to anyone in his family that he's in mlc? If you have, that may be where the mlc chatter is coming from and he's wants to make it look like you are telling your son this info. If so, do not say another word to them about it. I don't trust the sil and believe me, blood is thicker than water.
Keep in mind, he has to vilify you in order to look good and play the victim. He doesn't want to tell his lawyer why S14 doesn't want anything to do w/him. If he continues to do the things he's doing, he will lose S18 as well.
Write your response, sign and date it and advise your lawyer that this ends the discussion about those items. That you are not going to continue rehashing these topics and paying top dollar to continue to defend yourself about them.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.