Well, the jurors now know due to timing of him being seen out at the Love's truck stop during the night things confirms he is lying about not getting up til 5:30. The main thing Joseph got wrong is that he didn't realize Alex did initially try to cover for him out of fear. He figured because Alex always tells the truth that he'd already told LE what he'd seen. That's why his confession and Alex's testimony mesh. Joseph didn't try to protect Alex; Alex did nothing wrong. But my gut says the jury wants to make sure Joseph wasn't falling on a sword for Alex.