You're talking about reasoning here, as if she just said "no wait stop", when the situation is his wife literally passing out halfway through sex. That isn't at all the same as her just changing her mind. She PASSED OUT. She LOST CONSCIOUSNESS.
Married or not, if you continue having sex with someone after they are no longer conscious, even if they gave consent while conscious, that abjectly makes you a rapist.
On another note, are you pulling my leg? Do you really not understand that it's wrong to keep banging someone if they pass out during sex? I just have a hard time computing that anyone could not see that for the objectively consent-ending situation it is.