IMHO place the focus on yourself and move one with your life if that is in fact what you want to do-
When we focus on trying to get revenge (which IMHO this is what it sounds like
Maybe I should take out a PPO against the ex-wife?
JMHO) we take away from ourselves and allow ourselves to get wrapped up in all the chaos again....
Why not go and be with the crew and do your thing and not worry about what she does? If you truly do not want to be around her who cares if there is a PPO!? Just move on and go about your life