Don’t Flinch

A falling tree catapults a large log at some nearby workers.

I’ve been trying to figure out how this happened and this is the best I could come up with:

Try to picture a medium sized tree or log laying horizontal on the ground with another smaller piece (AKA the one that went flying) propped up on one side of it.

Now my guess is the side that was propped up was under the falling tree, and as the tree came down it was struck perfectly and went super saiyan, propelling it towards the camera.

Or maybe it was bigfoot, who knows.