young tree climber gets ripped from the tree

Removing a few gumtrees, we got young Nathan up for the biggest removal of the day. He was going really well, when he sent one side of the head, and it wrapped his lifeline and pulled him hard off his spurs. Thankfully he is fine no injuries. A good lesson to learn the forces at play in treework. No one did anything wrong he just got very unlucky. We had pulled his line out of the way prior to the cut so it's hard to understand how it wrapped his line.