This shows a tree barber chairing (7:50) when it looks like it should be safe to cut. Then cutting a tree with a plunge cut. A plunge cut allows for a very controlled felling of a tree. This makes a dangerous task much less dangerous. When the barber chair happens look at how high the trunk of the tree is in the air. These will often fall from that height and can go quit away from the stump. So, beside the kick back when it starts to split if it falls from the apex of the split it can travel a distance with more than a ton of force. That is one of the reasons for moving in a 45-degree angle away from the stump and the direction of fall when the tree starts to fall. If you see a tree starting to barber chair move faster and farther.
