Honestly I'd have to question what state their marriages were in before one of them lobbed in the hand grenade. And, what issues the non-transitioning spouse was already dealing with.
I know I'm cynical, but:
The lesbian may have been dealing with internalised homophobia, now she can see herself as 'straight' (after a fashion).
The Clarks, well she's formed a whole new identity for herself running a support group, maybe this gives her a sense of purpose, maybe she's the type who subsumes herself to the husband, becomes his mother, in a sense. Who knows?
Wilkinson - I expect she'll bail later.
The woman who took her husband to Victoria's Secrets for a bra fitting - my sympathies to the bra-fitter, being dragged into this man's paraphilia.
TBH I see the whole article as people trying to convince themselves. 