Sorry this took so long for a reply but we've been having problems having mail forwarded.
No, what he has been trying is not the only relief. If you look on my website under "Articles" then "Protocols" then "Epicondylitis" you will find some suggestions.
From your description I would suspect that the "stinger" is a trigger point within the rotator cuff muscles. Massage therapy could prove extremely beneficial.
Chiropractic adjustments of the neck, upper back, and arm will also help.
Last, but certainly not least, we have recently received a sample of a product called a WristWand. This is an aluminum rod about 10 inches long and about an inch and a quarter in diameter with cushioned pads at either end. It comes with instructions for doing an exercise that helps strech and strengthen the muscles and tendons of the hands, wrists, forearms, and shoulders. I have been so pleased with the results we have seen with our massage therapists, front desk people, and patients that I now stock and sell these in the office. Go to their web site and order one. It helps as much as anything we have ever used for wrist, forearm, and shoulder problems: http://www.wristwand.com
Best of health,
P. S. Send me a progress update sometime.