Considering the tingling is more of a concern than the pain in his back I guess I would test his neural tension in slump and SLR. If positive, neural mobilisation ex's might be beneficial. Depending on how irritable he is it may aggravate symptoms though. You can compensate by neural slide techniques which will allow the nerve to glide more freely (i.e. like a flossing technique). Hydrotherapy may be beneficial in maintaining ROM and retraining core stability may help with prevention.