Has SRS ever found a complaint of Dick's justified? When do they stop and realise he is playing them and that there is no validity to his complaints? Don't they have more serious cases to consider? Your son is a teen, and teens have problems (I know none who don't have some issues through their teen years), and his is compounded by your idiot XH. Continue to not play that game. You have to be the one who is consistent. Your son will appreciate that one day.
Just know that this will all be a part of the past .... the kids will grow up, and then Dick can stand on his head and whistle through his behind, and will not be able to do a darn thing to control you or the kids (unless they want to). You may still have many battles to fight (I hope not, but life is a freaking battlefield sometimes, isn't it), but his time will come.
Take care.
Me:57 H:52 M:28 Got another lawyer last year and filed. D35,S/D twins28,D22 EA4/04 End? Who knows? "Life is like a mirror. Smile at it and it smiles back at you." — Peace Pilgrim