We tried a couple times and same thing every time...went back to the 2'0" vertical and also did a small x and she was fine. She's not off/lame in her legs at all and is otherwise moving fine. My friend's horse went over the same line without issue, so I don't think it was the footing - plus, my mare and I went down that line yesterday without any problems!
Any idea what this could be? She has no other symptoms as far as fussiness/pinning ears, or anything like that. Just the strange new jumping position that just occurred today and only down that one line!