I am my Hero today! or am I?

I felt like a hero Monday night. My boss has totally turned into a big pain in my keester! He told me if I had a problem with my job , then "there's the door", I said ok,have fun, and walked out. Now this may not seem like much, but at my job its a really big thing. See, Im a waitress, I had 2 tables waiting on their food and my boss was trying to do inventory, but yet found the time to come up front and bitch at me about any little thing he found. Rather than helping the cook , who was finding it hard to get a 5minute meal out of the window in 15 minutes. He was upset that I spilled a couple of crumbs on the counter, out of site of guests, and hadnt cleaned up yet. Which i would have as soon as I got my food to the table. He had some choice words, I did too, though I held my toungue so I didnt go off right there. Needless to say I walked out, regretably for the other server, and my patrons. But I was glad he would have to wait on my tables, and do his inventory. It felt good. But now, well it doesnt feel so good. Do I have a job? I dont know. I spoke to someone today, and I have to talk to the general manager tommarrow. I assumed I was fired for leaving, and drove that night , straight down the street to another all night restuarant, and filled out an application. A job I know I can get. But now it seems I wont be fired unless I dont show up again. I will just be written up with a stern warning. What do i do? I think I will see if my issue with this boss can be resolved. I will take my "writing up" and yes I will even appollogize to the ass. And see if we can work out our differences. If not , I guess I will go on down the road. I was a hero , in my book, for about 5 mins, haha , like Norma Ray! lmao