((((((((((PTSDCopWife)))))))):cry:
A real life Dr Jekyl/Mr Hyde. How unutterably sad for both of you.
Because his PTSD is so out of control and takes such an ugly form I think you DO need to get divorced to protect yourself and your baby - you are both just factually correct there. My T here does "good divorces" - there might be someone there who does it too and would be helpful to talk to. "Collaborative divorce" they call it. Don't know if that's appropriate with PTSD but is worth a phone call. But that's only IF (and it is a big IF) he stays out of the episode. Keep all the restraining orders etc in place. The legal world needs what it needs to deal with Mr. Hyde.
You need to be crystal clear (and he does too) that Dr. Jekyl is real ONLY if he gets help and does the right stuff (give you the house, get rid of the guns, puts people e.g. the police etc on notice about himself, admits, in a legally binding way, to his behavior. If he, in short boxes in Mr.Hyde.) This sort of thing (plus serious therapy EMDR/ET will help him get the PTSD under control. And getting the symptoms under control takes time, months at a minimum. If he is a hero by nature (a lot of people who become cops are) and Dr Jekyl is real and loves you, he will slay this dragon. If not, well, then only Mr. Hyde is on the table and you need him out of your life.
This next is just a bit of a hunch, you might want to take a look at the "co-dependency" threads here for you - do a search and read through some. Co-dependency is very stressful for the people doing it. Just a thought.
Prayers for you all...