So my friend and I were jumping tonight, and after a warmup, I took my mare over a small vertical (2'0") and she did fine. We went over a few times and all was well. Then we went to a line set at about 2'3" and when she went over those jumps she did something strange that she has NEVER done before...she kind of threw her hind legs to the side (out to the left) instead of picking them straight up so it's like she jumped straight with her front end and crooked with her hind!
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!