first, speak to your lawyer about it. give your lawyer his email, the recordings, etc and discuss what to do with it and the legality of it.
then take a step back and decide what to do.
if he lied to you, he lied to his lawyer also. from now on, just stay away and dont let him goad you into any arguments. if he's intent on a D, then let him.
your sole job now is to protect yourself. take notes, write a diary on what he says and does. do not say or do anything that could be taken as aggressive against him. do not put anything in writing or an email that he can use against you. if he txts or emails anything, send it to your lawyer.
but most important, let the lawyers work through this.
what he did is unacceptable. his anger and lashing out is most likely due to his own feelings of guilt. you were not gullible, you were lied to. and personally i feel your anger is justified.
find what you're truly responsible for, and fix yourself. let him go off on his own path.
"In a ham and eggs breakfast, the hen is involved, but the pig is committed".