sorry about your troubles, hope it all works out.
One thing though, you should have let them fire you. Not only is it pointless to resign (because a future employer will ask your former anyway and even though you resigned it'll be obvious you were pushed), you left good money on the table, the tax you pay covers this and your employer would have to cough up too.
Would also have given you some income to get rolling.
One of the written warning letter arguments was that I said No and that it was egregious subordination. They didn't say which No or what this was about. However, I did say "No, Lisa, I'm not your man. I can't stay another hour. I've worked from 1am to 7am on a Sunday and am exhausted. [You have to realize that I've worked all kinds of crazy hours for years without even a thanks.] I'm sorry the problem's not solved, but I'm delirious here and can't keep my head from hitting the keyboard. I need a few hours sleep. Call one of the other techs." They very angrily told me to leave and that a replacement coworker was coming to the office to fill in for me. On the way home, I fell asleep driving in my Jeep. It was the first time I had fallen completely asleep while driving. I don't know how long I had been like that but woke up driving in the opposite lane against traffic. Luckily I was able to snap out of it and no one was on the road.
So, anyway, they wanted to get me out of there for 4 reasons, but I'm wondering if I can sue them for the above reason. Probably not.