Demanding things and pulling someone’s keys out of their ignition against their will usually does not help defuse the situation and gain a positive outcome. It can be hard to be reasonable when someone has just accidentally risked your life but well worth trying to keep calm.
I asked for his details, it turned into a demand when the jerk failed to be cooperative.
I turned his engine off as I thought he might drive off, as indeed he did in the end. Don’t see what was unreasonable given the situation and how it was panning out.
I was a lot calmer than I am now after having read your accusatory post, even though I thought it pretty likely my collarbone was broke again, as did the ambulance crew…