I went ahead and got on her with the idea that she might just be stiff, and warmed her up really well. She doesn't FEEL sore, and when a friend watched her she wasn't moving awkwardly or anything, but I can't help but think theres something off here. I just did a short walk-trot ride and cooled her out really well, then brought her back. I checked her over and didn't see any swelling or feel heat. Washed her legs off, then put her back up. She still did a little of the shifting around after the ride, though not as much, so I'm just not sure.
Heres a video (click it) of before the ride to show a little of what she was doing.
StallionsSourKittens059.mp4 video by asylumescapee95 - Photobucket
Not sure if it matters, but she's a six year old ASB mare. I also tapped each of her feet to see if it might be a problem there, but no sensativity. What do you guys think?