They may be an idle threat, but that room is real. It's 1 Pimentel Hall, and that video is from a webcast. Given the circumstances and the fact that you can see students in the rows in front of the camera, I would bet it actually occured during class.
That being said, Geodome is right, were that professor to actually have that information on his computer, he would be liable for not safeguarding it properly. Of course, this may be why he's so upset. My guess is that he's just an *Ignore me, I am a weenie* like many of the profs here. I'd be interested to know which prof it is, but I didn't recognize the guy.