Well, that's not how it's supposed to work. A guy cutting down a tree branch gets caught in a gnarly spill when the branch he was cutting down falls and takes him down with it. Nature isn't too kind when you're chopping her off, I guess.
His co-worker Kurt Stepp, who posted the video (because the guy is presumably fine?), says:
My coworker cuts down a tree and the tree is not very happy about it.
The most fantastic thing in the video might be the woman's voice who calmly yet urgently asks "911 or not?". Also, there's a loud expletive in the video (as you'd expect if you saw this in real time), so turn down the volume if your ears are sensitive to such natural sayings.