Yes, this could work. This helped me a little, but didn't cure it at all. I stuck to his method for a while, and this isn't a bad method but i just couldn't get myself to stick with it for very long.
But I know what will help you. I have had golfer's elbow on both of my arms for over 1.5 years now. And just recently, I found a method that helped me to cure my right arm and improved my left arm about 90%, I would say. I was watching a lot of Ivan Denisov's YouTube videos a few months ago, and that's where I found the cure.
- A lot of reps with small weights. This is similar to the idea of Mark Rippetoe's technique. But not heavy chin-ups; very light snatches or something similar will help you better. Just take one exercise you can do with light weights where you feel the pain and do tons of repetitions. Do thousands of reps in a few days if necessary. It will help the tendons and ligaments to heal. There's something about blood flow and strengthening that is the reason. Resting will not help you.
- More importantly than step 1 are static holds. Just take a heavy bell or another heavy weight and hold it over your head with a locked-out arm for as long as you can. If you start shaking, then you must hold on even further until it is not possible to hold it any longer. Static holds are the key to strong tendons and ligaments. I (almost) cured both of my arms with this method and even my knee pain with wall squats a few weeks ago. Just do a few minutes of overhead holds after your training session, and the pain will go away quickly. Try to do the static holds daily.
I really did try almost everything. From Therabands to the Pin Firing Method, to electrical massages, to manual massage, and resting. For over 1.5 years, nothing helped me until I tried this method I mentioned above. My right arm was completely cured after just two weeks, and my left arm won't take much longer, it seems. At least I have no pain during training anymore. Please try that out and let me know if it helped you.