Well the scarf technique, I guess I would call it a binding technique .
It's an old world technique to correcting different type of postures by using fabric belts or soft ropes, and by holding your body in place such as your shoulder blade up with soft rope like scarfs to lesser the impact of your movement. Thus for making it easier for body to recovering from the painful knots and joints without straining it on the process. While doing so also adding the chunky knots to constantly pressing down the spots to relieve pains such as the back of my neck while I'm moving my body around doing other things , it also moving with me and slowly and press massaging the spot like my very own personal massager therapy .
You might also have seen some towels massage technique online videos here an there posted my man doctors and chiropractors. It's the same idea but easier to customize like adding more knots to the scraf for pressure spot and easy mobility to help the blood flow while hands free. (fashionable sometime if you tight the bow behind :lol: )
You can simply just use any kind of long soft scarf fabric , looping them behind your back then pull both end to the front and upward . Your scarf should be tucking underneath both of your arm pits while the mid section is pressing up against your back. Then just simply loop both end of the scarf criss crossing left and right end behind your neck and pull the rest to back to the front. Your scraf is now a simple tool to pull both of your shoulders backward by simply pull the rest of the scraf which is now pressing up behind your neck , your back , and both of your shoulder . Wiggle your shoulder around while pulling the end scarf toward the front to adjust the tightness that you find acceptable then tight the rest of the scaf as a knot behind your neck. Sit back and rest for a while , your own weight should help you adjust the comfortability.
I don't know if I could paint the picture correctly for you but It's what I do to lesser the pains through out the day . Sometime move the scarf knot to press up against my bigest shoulder knots which kinda giving the same effect of the tenis ball on the wall when you move your body around while walking or stretching . Keep the scarf there for a few hours, them rest your shoulder and try again later if it help , you can keep adjusting the pressure to however it sooth your pain and relieve.
There are many way to use the long scarf. you can can even criss cross it behind your back and creating more knots to press on different spots whike still pulling on your shoulders . The back cross style I often use for keeping ice or hot pack on my back, or when your neck seize up you can pull them against your neck, then slowly pulling left to force your neck to slowly turn , then pull the right slowly , while you resting your neck weight up on it by looking up about 40-60 degree. A while back in my old place, I use to put up a few heavy duty hooks on the ceiling in my room and looping long piece of fabric for similar technique of the suspension yoga. It like a self helping pain relieve using your own body and gravity to do the tricks.