If you call completely severing both heads of your bicep right at the shoulder tendons "unattached", then yep, I have had mine unattached, along with a complete cut to the bone on roughly 35% of my tricep, about 50% of my deltoid, and a broken clavicle…all at the same time.
I was able to slip my arm out of a sling and gently draw a 64# wheelbow to anchor and kill a buck 12 days after the injury…..although I would not recommend doing that.
Once therapy for 6 weeks was over, I was shooting 20-30 arrows a day right at 11 weeks from the date of the injury, and was back to doing whatever I wanted to do by the 16 week mark.
The main thing is the therapy, and if you have never done therapy for an injury before be prepared…..those folks do NOT baby you. :D