Also, he wasn't actually fired. Given that fact, I'm not sure he actually has a case. Too bad such a big fuss needs to made over so irrelevant a figure.
There's a dispute over whether he was actually fired. The university is claiming he hadn't been, since the paperwork wasn't final and it would make their case stronger if he hadn't been, That said, given that they were already advertising course he would be teaching, and that he'd quit his old job under the impression his new one was secure, I think any reasonable jury would conclude he'd been fired.