There didn't seem to be much holding her to him otherwise. I actually thought he came across better than she did
But it's easy for the husband to come over "better" - he hasn't given up the opportunity for a life of his own. Indeed, he was the recipient of his wife's self-sacrifice. She forfeited an independent life to support her husband's career. She did all the 'wifework.'
But in his eyes, it wasn't enough for her to do this - she had to change her life when he decided he wanted to change his.
Now, I don't hold with women doing the dependent wife thing. I don't think a permanent SAHM is healthy for anyone concerned - wife, husband, or children. Never give up your job, say I.
But ... sometimes that's far easier said than done. And we have to remember the strong historical & social forces that shape women like the wife on iPM. There's many generations of women (and still now) who are brought up (conditioned or socialised) to feel it's their social or familial or domestic role to look after everyone. To put others first, and so on.
So in my hearing of it, the wife's sense of losing her husband, of the OW "winning," is tied up with her sense of self, of her role in the world.
He was an arse - he was only concerned with himself, and his needs and plans and desires.