Personally, I think it goes far deeper than whether or not a WS has integrity or morals. We all have those aspects to our character, to varying degrees. It's listening to those morals, valuing one's integrity, that make all of the difference in the world.
Being human isn't easy.
Fortunately, however, we humans also have a choice. Now, before you roll your eyes, Dem...
"As a human being, you have no choice about the fact that you need a philosophy. Your only choice is whether you define your philosophy by a conscious, rational, disciplined process of thought and scrupulously logical deliberation--or let your subconscious accumulate a junk heap of unwarranted conclusions, false generalizations, undefined contradictions, undigested slogans, unidentified wishes, doubts and fears, thrown together by chance, but integrated by your subconscious into a kind of mongrel philosophy and fused into a single, solid weight: self-doubt, like a ball and chain in the place where your mind's wings should have grown."
What is infidelity if not the result of a 'mongrel philosophy.' What junk heap of unwarranted conclusions, false generalizations, unidentified wishes, doubts and fears did your WS integrate into his philosophy (values, morals, integrity, however you wish to define it) in order to justify actions he knew to be fundamentally immoral?
We are all responsible for our own happiness and our own philosophy on life. We have to carefully define these things like integrity, morality, scruples, all of it... for ourselves. It's requires thought, actively contemplating ourselves, our actions, our lives and what we do with them.
Now, I'm sure by now you know quite well that I'm not perfect and that I don't always have the ability to see all sides of an issues. I don't always define my philosophy by a conscious, rational, disciplined process of thought and scrupulously logical deliberation... because, well... I was unhinged for long time.
I can't answer, with any certainty, whether or not a WS has morals or integrity. It's seems fairly obvious to me that at the time of their affairs, morals and integrity have already ceased to mean much to them, because they've allowed themselves to buy into a sort of mongrel philosophy that allows them to betray themselves.
To me, infidelity just isn't a possibility. It never was. Maybe that's because I have enough morals and enough integrity to realize that I'd be betraying myself above all others.
So...does this mean they do not have morals?
No, but I would say that 'they' would benefit from carefully defining what those morals are and what they mean.