The big twist was this -- Paige gave each team a card and a pen, and they had to write "half" or "all". If they chose "half", they got half their mortgage paid off regardless if they won or lost. If they wrote "all" it was all or nothing.
Both teams wrote "all".
In fact, Angel wrote "all" before Paige got finished explaining.
The margin did surprise me a little. Going in I figured it would be close, since both teams did great rooms. While watching I did notice they said that that Jon and Stacy got 69% in the semifinal round, so they had a pretty strong fan base.