What should I do if my boss sees me as an adversary?

Either do as Antihero suggests or do as I did, voted with my feet and left the boss in the shxx to sort out his own mess. I made sure I left nothing undone that was my responsibility. I even gave a list of what I had done into the HR office to be put on my file as proof. On the Monday I went to the dole office to sign on. 'You can't as you left of your own accord'. Explained why, and made a signed statement to that effect. They contacted the company, and to shorten a long story they were taken to court for 'constructive dismissal' and I was awarded a nice sum as compensation.