Althought for the most part, I surprisingly agree with Requiem, I believe you may have burned your bridges with you PCP, and once that happens you have limited your resources.
I am not sure where you are, as in the country or city, but if you are in a city or near a city, I would consider finding another pm doctor, and probably a new PCP. I say this because whatever records that are sent to new pm doctor are more than likely "red flagged", which means your records will include his reasons for thinking you abusing your narcotic meds.
I see no other way out for you. Sadly due to others who do abuse there narcotice meds, we all suffer the consequences. So I would strongly advise you to begin again with getting both new PCP and PM doctors. After that is done, you will have a clean start, and begin by asking your new PCP to recommend a PM doctor for you. I am not sure how to find out if the new pm doc prescribes or not. But if you have to begin again, so be it. It beats walking around in pain constantly.
If you begin again, describe what is going on with your back, your pcp doc may ask for you to get mri's and ct scans, if they do, get them. Alot could have changed by that time.
Good luck to you, and take care, please dont wait to long before taking action, this could only do more harm to you. I know its a different pain to start over again with getting 2 new docs, but you may have no choice.
Hope you feel better soon,
Sorry, forgot to introduce myself, I am nini53/Kathy