The answer is yes, but you have to go slow! :)
Already placing yourself in the SpineGym is an exercise: when you straighten yourself in a good posture against the minimal resistance of the poles, you already activate your deep core muscles, the key muscles for the wellbeing of your back. It also improves the metabolism in the affected area, thus speeding up the healing process .
You don’t have to use force and you should start with just very delicate extensions and flexions. You should avoid the rotations completely, maybe trying to add them just later, but just with a very minimal movements. An inch to your left and an inch to your right is already enough to ignite the small rotatory muscles of your vertebrae.
The best thing to do before starting the exercises, is to take the SpineGym with you to your doctor and go through the exercises with him/her. He will understand immediately what SpineGym is about and I’m sure he will give you good advices of how to use it in a most effective way for the wellbeing of your back.
Remember, that SpineGym was initially developed as a rehabilitation exercise for back problems, especially for vertebral disc problems, such as herniated discs!