I'm laughing at Dan being humble.
Also, there really wasn't anything to figure out with Mr. and Mrs. Smith. Diane was roommates with Toni Ferrari from Paradise Hotel and they had a falling out, and then Toni got her revenge by calling a bunch of the other HGs (Janelle, Marcellas, Erika, and the rest of S6 at minimum from what I remember) telling them about Diane having a pre-game alliance with Jase, and possibly Nakomis and Alison too.
I love Toni but she's nuts (see vid below) and definitely takes a lot of blame for ruining BB7.