That's strange, because the first 3 times I rode her (I can only ride once a week, due to my work), she didn't act anywhere near that bad. Not bad at all, actually. She didn't want to go out in the field, but I just gave her a few good squeezes, and she went...but she wasn't flighty, crazy like today. She was mellow stubborn, lol, which was fine. When we took them across the street on the trails, she was great. Today it just seemed out of the blue. I rode her last weekend, which is when I cantered her the first time, and was the subject of my first post up there.
What we did, is my husband said, "oh no you don't!", and hopped on her and took her out, made her go for a bit, then we were done. She tried to act up a couple times, but he got her under control without her rearing again.