Is it possible to unlock the DLC for Destiny on the Xbox 360 after its been delisted from the store?

Hi all, I just want to preface this with the fact that ive already tried to purchase the DLC for this game by legal means. There is no way to do so anymore since its been delisted from the xbox store and thats the only reason why I am even asking this. Im trying to unlock the DLC but the traditional means of doing so dont work for Destiny. Ive tried using XM360. It says its already unlocked. I enabled a few patches in Dashlaunch that didnt do anything... at this point I dont know what else to try. I own the game on disc so I can play the base game fine, but if I try to play any DLC it says I dont own it. Im honestly not sure if theres anything else I can do at this point. Is anything from the DLC just lost media at this point on 360?