Unfortunately, you are right. It makes no sense to me. My skin was crawling watching him to to Larry King.
Now, before anybody thinks I've gone feminazi, I do not absolve Andrea Yates. She was not legally insane and deserves the life sentence, which she received. But, I do not consider Russell blameless.
Whether he can be charged criminally, I do not know. But it makes me sick that he is planning to profit from those children's death and then re-procreate a whole new family with a new version of Andrea.