I don't think there was ever any 'doing a Deana'. For a start, BB knew that she was not favourite to win, but was notably behind Luke. For another thing, they had gone to a lot of trouble to promote the white room twist; it wasn't good, but obviously they were going to show any conflict it led to in the main house, since that was all they were going to get out of it. There was, from their point of view, disappointingly little conflict; the housemates were nice about Conor and nice to Luke S. Only Deana gave them what they were hoping for.
And similarly I don't think BB expect Speidi to win. They expect, as we all do, Rylan to win.