Okay, I'll start by admitting that I'm a shameless conspiracy nut - I'm always convinced the twists on all reality shows are much more "shocking" than they end up being or that we're not being told everything (okay, 1. Duh! I know, I know... and 2. Example: I still think Matt from Joe Schmo knew). So, it occurs to me that Steve felt really bad for Randi, who is just breaking down, losing it, and since part of being a good actor is being comfortable with ad-libbing...
He made that whole speech thing up right then. He seems like a stand-up guy, and felt bad for her since her dad just cut her off and basically told her she was an idiot. I don't think he had any intention of making some grand speech about how great Randi and her family are and how amazing their familial bond is, but he thought, "Gee, folks. You really are that uptight. Can I possibly say anything to make it so Randi and her half a mil aren't sleeping on my wife and my sofa now that her family has disowned her? Hmmm...okay, here I go."
One last thought...OHMYGOD, WHAT IS UP WITH PAT AND FIRE?!
Contemplating arson, weird incest-type feelings for Randi, somehow managing to be the only guy I've ever seen NOT look adorable in a kilt...
This guy should be committed.