You're implying some pretty serious things here, and entirely it's entirely unwarranted. This kind of armchair analysis is really disturbing to read, it's the same with anything legal, when all it becomes amateur hour at the law.
Getting screened for depression and psychological disorders is just rude and callous. You've not factored into your analyss the wife's role in all this or what might have motivated her to have an affair with this employee. All factors which you've completely neglected to consider...
It's even more sad that this is the top comment. All these chest banging alpha make wanna bees