Damn VM- when having to have surgery on your collarbone is considered a lucky circumstance! Ouch!It is the case.
Nothing works, but it doesn't address the root cause....and while I know you said yours was an impact injury, there are ways to heal quickly and improve your bodies defense to future injuries.
In the mid 90's I fractured two vertebrae in my lower back slamming into the reef. Doc said I was going to be dealing with it forever due to the soft tissue damage that was present as well (herniated discs from L3 through S1 with two sequestered fragments impinging on nerve roots. I gained 25 pounds and suffered through it for 10+ years following the doctors orders of ice and Motrin when it hurts, never lift anything heavy or run..... finally opting for surgery when there were more bad days than good and the sciatica in my right leg was so bad it felt like a had knives in it from thigh to foot. Through a lucky circumstance I had to cancel my back surgery to get my collarbone fixed and the surgeon mentioned a colleague of his that I should see before I get surgery. This was probably around 2012 or so. I've been pain free since. Sure ill get a little niggle from time to time but I know what it is and how to get through it in a matter of days, not weeks. In the meantime I've deadlifted just shy of 500 pounds and squatted over 400 after the age of 50. Take that doc. I will say that medicine and pain management has changed radically in the last 10-15 years and I doubt that doc would make the same recommendation today. I tried a lot of different things similar to what you posted and it just passed the time between flareups. The human musculoskeletal system is fairly simple in the way it works and it doesn't require a bunch of random movements and positions to work correctly. Muscle fibers contract one way at a speed gifted to you by genetics.......you can't change it and aside from a serious neurological issue you don't have trouble with them "firing" or "activating". They don't need weird angles or balancing acts to work.
I don't know your specifics or your age but when you go through an injury like yours a lot of times if you don't make changes it can mess with you forever.
Was the surgeon's colleague one of your partners? MD? Trainer? What did he do? I'm guessing weight training.?