The National Enquirer is reporting that Matt Lauer walked out on his wife and kids. I think it should be that she kicked him to the curb. Apparently while Matt was in Vancouver, he just couldn't resist getting naked with some women and cheated on his wife with at least two women.
So, when she found out they fought. Considering she never eats, she probably had plenty of time to call him the ass that he is. For two days they fought and then Matt was gone. He left his wife and three kids behind which may explain why he was so damn chummy with Katie Couric the other night. He was probably testing the waters.