This is the problem with nerve root inflammation. If the root is swollen, any type of stretch can “piss it off” with the annoying pain and paresthesias. With a persnickety nerve root, I am a fan of oral steroids to reduce the root irritation. This does not mean you can stretch it too much as when the steroid wears off, you might pay the price. However, if you know prior to the steroid how much the root can stretch, you can then add 10% to the stretch after the steroid is active to gain some advantage.
Dr. Corenman