A couple of things to keep in mind. These are not embryos, they are zygotes; the product of an artificial fertilization outside the womb by (we hope) the genetic material of the father and mother. The docs only make sure the fertiliation took, then the zygotes get frozen. MANY (about half) of these frozen zygotes won't survive the freezing process anyway, which is why they do as many of them as possible and implant multiple zygotes into the woman each try. Many tries don't take. It's not sci-fi; these zygotes can (and often are) implanted into other women's wombs who are not genetically related.

I guess I don't understand why this is being regarded as a "legal nightmare." The men decided they didn't want to father a child with these woman anymore. Should they be forced to be fathers against their will? I'll all for women choosing or not choosing to have children, but neither to I think men should be denied the right to not have children either, particularly those who are behaving responsibly and trying to make good choices.

We are not talking about children, we are talking about hypothetical children. I don't know how many frozen kids there are, but if there aren't quite a few the women's chances are not very good anyway.

In reality, this might all just be the fertility equivalent of a divorcee's fight over the car or the house or the stereo. Maybe the men don't really care what happens to their sperm and maybe the women's don't really want to have the kids, they just want to win custody of the freezer section.