Well, since fatty pants was all warmed up and still just standing in the rain eating hay, I just pit a big pile of hay in the backyard and moves her back where I could keep a closer eye on her. She stood, happily munching away at her hay for a bit and then a couple of times, I saw her stop chewing and lift her head up a little (like they do when they feel pain), pin her ears back and just stand very still for about 30 sec to a minute and then she would continue eating. After about 20 or 30 minutes of this, she stopped eating and has now been standing with her butt pressed up on the fence. Every once in a while I will see her head go up like something hurts. I am continuing to keep an eye on her.
She still has her blanket on but I have already decided that if she does anything major, I will go out and take it off or at least fold the back half forward some.