are you prepared
Are you prepared to quit your job at this point in the year? Or do you think you can hang in there until May?
An intervention plan does not mean certain career death. According to ATPE (I don't know if you're a member or not) being placed on a plan doesn't kill your job or career, it's how you handle it. If you are professional and follow all directives, you can survive it.
Yes, I'd advise getting out of that district. You don't need the small town stress, but it would be less harmful to your career if you comply with a plan (if they do put you on one), than if you quit at this point in the year.
I was put on a plan a couple of years ago thanks to the combination of horrible classes, backstabbing colleague, and young and inexperienced principal. I did have to sign that I saw it, but there was a disclaimer that I didn't necessarily agree with it. I agreed to comply and my principal agreed to listen to me. I got through the year (highly stressful as it was), kept my job, and proved myself. It also didn't affect me at all when I applied for other jobs and changed districts a year later. My former district did not follow PDAS though--they had their own evaluation system. That helped because some applications asked if I was put on a growth plan for a PDAS domain and I could honestly say no.
It did not come up when I interviewed for other jobs this year and I'm in one of the best Texas districts now.
Think through your decisions before you make them. Has your principal talked to you yet? If not, can you talk to her? You need to get this settled.
Good luck.