Amateur hour, makes all of IT look bad
I'm assuming this lovely specimen worked as a NOC guy or similar -- why didn't he pull a Terry Childs and hold the network configs hostage until he got whatever satisfaction he wanted? A real BOFH would have wiped out all the network documentation, _and_ the primary and backup config files on all the equipment before casually heading off to lunch.
The thing I worry about is stories like this getting around to the executive classes and prompting more of them to consider replacing the "scary unstable neckbeards" with polite-but-incompetent offshore Tata or Infosys employees. People like this guy make the entire IT profession, including those of us who actually do a professional job, look bad in front of the decision makers. I've worked with a few people like Lennon Ray Brown (in terms of their personality, not their actions thankfully.) Let's just say some of these folks might have come back with a weapon of some sort if their boss gave them a bad review, not just wiped some router configs. IT does attract some intriguing personalities.
I've often opined that it's time for the IT and software development professions to grow up and actually establish a standard of professional work. Doctors and professional engineers do this, and the reward is a much more stable work life. Why are we still married to the romantic notion of the cowboy admin or coder doing things with no regard to how they could affect others?