U asked a question that u already know the answer to u just needed assurance that it's the right thing to do. this is in no way a healthy marriage or lifestyle (stalking him online and every time u find something) u know u can't trust him and no longer in-love.
he even said the only reason he doesn't want to get divorce is to avoid any financial loss (such a hurtful thing to say).
I read all the post and I can say ur relation is a dysfunctional one in every aspect. Get out as soon as you can and am concerned about his violent behavior it will only escalate and u two are alone in the middle of nowhere! yes fear for ur life he may think that getting rid of you is the only way he would follow his fantasies and keep his money and boat.