The back has to do with feeling supported or supporting yourself. You are torn because your thoughts and actions do not line up. You may be feeling guilt, resentment, or distaste towards your own actions. The spine is responsible for supporting you, but it compromised by the tug-a-war between honoring your true feelings and your ego. For example, you may be either dominating or over-dependent with others. This indecisiveness has led to undue stress and is taking its toll on your body.
Recenter. Drop 'the rope' or the fight with yourself. Find your footing with who you are from a higher perspective. Realign your beliefs and actions to relieve your discomfort.