Wolf: She can’t decide that when they are getting divorced. She would have had to state that when they were first married.
Feif: Very well. So if someone wants to get remarried and have kids with some poskim holding its fine while other poskim holding the kids will be mamzeirim, there is no law stopping her. But she and her kids will bear the consequences. Many people won’t marry someone considered a mamzer by great poskim, even if some others disagree.