If muscle spasms cause a loss of the cervical curve of the neck, then....?

Addressing the spasm would put the spine back into place, right? So if Ive had neck pain and many other neurological and scary side effects due to losing my curve due to a weightlifting accident involving in muscle spasms of my neck, and PT and acupuncture and deep mages havent done diddly poo, then a quick cortisone ANTI-INFLAMMATORY (not a mere pain reliever) should immediately **** that neck back into place, correct?