Lisa,
I so wish I had all the right words to make everything better, but I have nothing . I'm just sooooo sorry that this Ex is causing such trouble for you and your family. There needs to be some island in the middle of the ocean were bad Ex's can be sent so they can make each other miserable .
But I do have to say those are some of the cutest kids, darn near as cute as mine

Big hugs to you
Debora