This is not a reason to kill Terri. Michael and Jodi can have the Catholic church wedding they desire, but they must obtain it in steps. First, Michael must divorce Terri, and give guardianship to her family. Her family can seek an annulment on her behalf, and would likely get it. Michael could marry Jodi in a civil ceremony until the processing is completed. Then they can have their ceremony in the Catholic church. The kids get a legal father, Jodi gets her wedding, Terri gets to live. Win/win, right?
I'm kind of tired of the "catholic wedding" thing. I doubt seriously that Michael cares enough about anyone but himself to want to give Jodi her catholic wedding. This guy is void of any sympathy, empathy, and real emotions of love. I agree with someone who earlier said that he is a sociopath. A catholic wedding is probably not high on his list.
Money, now there is a movivator for someone like him.