Avram in MD,
1.) I believe that if a Government that was faithful to Halacha ever ruled E”Y (I think there was) and the Rambam was correct on his assessment of Torah law in the case above (I would err on the side of saying he was correct.) Then yes women were brought in front of Batei Din and lashed for not washing their husbands feet.
2.) Believing that Hashem is immoral makes no sense. I do happen to believe that PEOPLE killing other people for violating a tenet of any religion is definitely immoral. I doubt anyone would really disagree with me on that one. (unless obviously it is a tenet like “do not kill” which besides for being a religious rule is one that is made for the good of society. In a case like that killing someone becomes somewhat debatable)