--you certainly have a lot going on.
But I am amazed you claim to have had no neurological tests except for those for carpal tunnel. Have you ever been to a neuromuscular specialist/neurologist? It sounds like there is a DEFINITE problem with your cervical spine impacting your spinal cord and nerve roots--the curvature and that baseball trauma may have both contributed--and you need to get a high-Tesla resolution MRI of your brain and cervical spine at the very least (and probably of your thoracic and lumbar spine, too). You may even be a surgcial candidate.
There may be other things going on as well--you probably fall into that "complicated case" category--but much of what you are relating can be due to abnormal pressures in the brain stem/cervical spine and that needs to be addressed.
You should also copy your post over to the Spinal Disorders forum:
http://neurotalk.psychcentral.com/fo...aysprune=&f=22
--as there are a lot of people there far more knowledgable than I about the vagaries of spinal compressions and the attendant nerve dysfunction.