Lol Drew, yes but she's not the only one, there's at least 1 other confirmed case at the barn and that horse hasn't been going out in the pasture, so it makes sense it would be in the hay. I have already had several friends tell me that's what this is, and they know because they've had the same experience in the past with their horses.
A big concern right now is that as many ulcers as are in her mouth, there may ALSO be some in her GI tract
Might explain the off and on diarrhea she's had since these sores showed up...so now I have to keep a close eye on her for signs of colic, all because of this crappy hay grrrr!!!