I have had a carpal tunnel release. Can you get a recurrence years later?

Yes... ... Though this is unusual. When carpal tunnel syndrome recurs, it often happens many years after the original surgery.
Yes. See my other cts answers. The wrist is a joint and the muscles of the arm get tight with trigger point in the muscles. The pain will radiate into the hand and finger simulating the need to release the ct ligament. Travell suggest first treating the muscles and then the joint tunnel will decompress. Travell also notes that the shoulder, neck and maybe the jaw needs treatment too. Wellness is vital.