No, I would worry about IVDD (intervertebral disc disease). It would be best for the dog to be evaluated by a vet and try to keep a very restricted activity level at home to reduce further injury. If a disc suddenly ruptures, the dog could be down in the back end and require surgery as a worse-case scenario.
Have you had the vet do x-rays? I would start there to see what is going on. Until then, restrict activity, especially jumping/twisting motions.
Huskies are usually quite a hardy breed of dog with relatively few health problems. The biggest problems that most husky owners deal with are the fact that these dogs are diggers and they are also consummate escape artists who love to run off. If you think about it, huskies are bred to run long distances without getting tired, it's instinctive with them, so it's not something that can really be un-taught, it can only be managed.
If your dog has recurring back pain then he is doing something that causes him to repeatedly injure himself. As Shannon said, I would have the dog evaluated by a vet, and preferrably a vet with a specialty in orthopedics, to make sure there is no underlying disc disease present. I would also start a journal, writing down everything your dog does each day, what the weather is like, whether or not you caught him trying to climb or jump a fence or other barricade, and how he behaves each day with regard to being in pain. Sooner or later you will be able to draw a correlation between his activities and his being in pain and you will then be able to refer to your journal to see what causes it and what you can do to prevent it, or at least prevent it to the best of your ability.