Obviously there are no archers in this thread.
What happened here is the result of a carbon arrow shattering upon release sending the back end through the archers grip hand. Carbon arrows are brittle and can develop hairline cracks that can cause a failure like this. This is why you flex your carbon arrows every time kids!
Target archers buy decent arrows mate( Aluminium carbon composite) . Noobs and hunters use carbon arrows cos they are cheap. Who gives a fuck if you lose a carbon arrow whilst hunting.