Dan is no longer nice. He used his religion as a means to enhance his greed for the money and it doesn't get lower than that. Swearing on his bible and his grandfather's cross when he was telling a blatant lie was pretty sick and low. Bad enough that he swore on his wife, but his religion, now come on, that's bad.
What makes it especially slimy is that he is a TEACHER in a CATHOLIC school. What kind of message does that send to your kids Dan?