I've had two failed back surgeries, and the thing that kept me working the last 6 years of my working life was Acupuncture and Chiropractics. (After EACH of my surgeries, I had to learn to walk again. Don't let the Lady get too far 'down' or give up.) For Acupuncture, don't go to someone that has sat through 6 weeks of classes and thinks he knows what he's doing. Find a true DOM, or OMD; Doctor of Oriental Medicine, or Oriental Medical Doctor.
As I was a Karate and Judo player in my earlier life, I fell right into TaiChi and Qigong practice. I also do sword work with a 'suburito' for balance.
But like Mr. Mick said, try anything. Something WILL work.
PS. Sorry about your wife's horse. I remember when I had to turn mine loose. A BuckSkin that stood 17-3; had Morgan blood. Sucked a yard.