Wow... Glad I wasn't in that class! Did he end up failing anyone? I can see incorporating a student lesson into your semester, but that is nuts!

Presentations, especially, are hard for undergraduates. It's not only the experience, but you're presenting in front of your peers. Unless they're non-traditional, undergraduate students are still pretty young and still worried about how they're being perceived by their peers.

The worst class I ever had involved a teacher who would get angry every class, because students weren't listening. This turned more students off, and he would get angrier. He'd usually be sweating, sputtering, and red-faced by the end of class and yelling that people need to pay attention.