Have you called UA? They should have a list of equine vets for the Northern part of the state. Dr Nancy Jack, head of the equine program is a very nice lady and is always willing to help out when she can. I know they're in the NW part of the state, but she has an extensive list of contacts.
If you can haul, you might want to call Dr Palone and make an appointment at his office. He's not my favorite equine vet, but he's good and has a great equine treatment facility. You could have Dr Karen Hooks, our best Chiropractor meet you there and give Chili a treatment as well. I believe she charges $120, for chiro and accupunture both, with a small travel fee. She's very good, and honest. She'll let you know if her work will help or not after her first treatment.