Have you had any phys therapy?
That can help resolve some of the pain & spasms with the use of ultrasound, massage, heat/ice, low level laser and/or IF stimulation.

My chiropractor also did NIMMO which is kind of a mix of deep tissue/myofascial release and trigger point work. I had severe spasms due to RSI/TOS and he used all that I mentioned above, it was the best help for me.