Your friend on the bike has better pain tolerance than me. I'm lucky I survived my dirt-street bike days, we would do 50 mile rides all off-road, and the street bike usually would see 100mph.
The trails I rode were the same ones they had the1973 International Six Day Trials on. Those guys were a crazy bunch, 100 miles a day. Most all those trails are closed to bikes now.
I broke both bones in my lower leg years ago (not on a bike), they put a metal pin in it, I was up on crutches in less than a week. Had to wear this big plastic orthopedic boot for ~ 3 months. But that doctor gave pain meds I was on for over a month. That was before the opioid "crisis". I had no problem stopping the pain meds
My shoulder was too painful to even get in a friend's truck. Called 911. At the hospital they put me on IV Delauid, took xrays, and when the pain meds had full effect they manipulated my arm back into the socket. That only took a few seconds.
I've reading up on this and they don't recommend trying to put it back by yourself/untrained non-medical people. You can do more damage. I don't think I'll need surgery unless there is soft tissue damage. They want do a CT scan and maybe an MRI.
I missed the appointment for that today as I was in too much pain. Sort of a couch potato I watch TV and try to read a lot on the computer
Be surprised at what you can do if you have to. I cut 1 finger length wise all the meat gone and my pinky was hanging by skin from a 90cc Jonsered. Bound them up and drove 30 miles to the hospital. Walked into the ER and asked for a doctor and the nurse gave me paperwork to fill out. 5 min in I set the pen down and I told her I hacked my fingers up with a saw and could I see a doctor before I bled to death. She jumped up all horrified and while walking to the room said she didn't think it was that bad since I was so calm. I said that having a hissy fit wouldn't make it any better. Reality was I cut all the nerves and it didn't hurt at all. When they unwrapped it all the nurses came in to take a look and ooooed over it then they wanted to helicopter me to a different hospital for surgery. I declined and told them I'd get my girlfriend to drive me down. I will never forget the "numbing shot" that first place gave me between my fingers. Hurt worse than the chainsaw. Still have no feeling in my 2 fingers and they are very stiff but that surgeon knew his stuff. I still got them.