Damnit, Wet. You should have picked the other horses for the race. My state hates you and your streak
Hopefully, Wet, you can see that your son living with a PTSD individual is not a good thing. Not just because he's weird and unstable, but because of the effect on your son. If nothing else, what you describe is likely only part of the story - either because you are telling the highlights or because you aren't seeing the whole picture.
Either way, having your son live with you is the better course of action, right? Did you make that permanent yet?
I ask because your son is at an age where he'll fight for his independence. And far be it from me to point out the obvious, but it's likely he will be able to use the family discord to 'manipulate' the situation to his way of thinking. From my perspective, that's the time that your son will spend with his friends and find the trouble that only a teenager of his age can find. He's not of an age where he'll always make the best decisions - that's what his dad is there to help him with. Without the permanency of the situation, it'll be harder or impossible for you to help him. Too many loopholes for him to exploit.
AJ
"Our lives begin to end the day we become silent about things that matter" MLK Put the glass down... "Yesterday I was clever so I wanted to change the world Today I am wise, so I am changing myself."