A Darwin Award Winner in life?
Depends if he has any children. The criteria is that recipient must remove themselves from the gene pool to be a Darwin Award winner. If he already has a child then his genes continue and he is at best eligable for an Honourable Mention.
I spent far too many hours on the Darwin Awards website...
The sad thing is that the wife is going to go to prison for a long time because no matter what her reason was there is no LEGAL justification to take hammer to balls.
This is an important point, if the judge is very liberal or very conservative then, for different reasons, she will walk. With most judges, the severe provocation will be a huge mitigating factor and at worst she'll get a couple of weeks or a fine.
Now if a good lawyer, one who has a track record of working cases where women have been poorly treated were engaged by the (soon to be ex), wife, then there is a very strong chance that even if it gets to court, she will walk scot free.
There is the other side to this too: will the husband press charges?
The wife is in a very good position to, not exactly blackmail, but lets say, engage in "weighted negotiation". It starts with the affairs, he could live with that, affairs with students, he could probably live with that too, then there's the girl's emotional states, this is taking advantage of his position for personal gain in immoral ways.
This may not be illegal, but among educational institutions, getting caught* is an absolute no no. This severely compromises his employment chances, if he is weak, he might cave in at this point.
However, deliberately trying to get someone pregnant without their consent maliciously - at that point you're entering into criminal territory. If he is as much of a narcissist as the narration indicates, then he will definitely cave here.
1) he still gets to play the "victim" in his version of events
2) more importantly, he doesn't have to face the consequences of his actions. That is kryptonite for narcissists.
So unless the Police and prosecutors take the decision out of his hands, he won't press charges on the (now ex) wife.
*even today, too many institutions will turn a blind eye to such things if they can get away with it. Only the threat of publicity tends to draw action.