Spot Update--chiro question

So, after the farrier appointment today I think we know the location of 
Spot's issue: right shoulder. He grumbled and protested all work which 
included lifting the right foot high and under him--held down closer to 
the ground and stretched forward he was fine. When my farrier was 
nailing the shoe on he sat down on him a few times and generally acted 
tortured on the right front. Was quiet and relaxed for all other feet.

So. Shoulder owie. I am thinking about doing a chiropractor--anyone have 
any notion if there are things in a shoulder a horse chiro can address? 
I've no experience with that practice on animals.

Eileen Morgan
The Mare's Nest
http://www.themaresnest.com