The problem I have with that is he didn't do anything different this game, he just got better results. Pass pro was better, play calling allowed him to get rid of the ball, lack of coverage allowed for open receivers, but he did what he's been doing. What I think are his real biggest problems, pocket awareness and keeping his feet alive, didn't change.
Confidence should come from doing things properly, not results. If you're not doing things properly, but getting the desired results, it creates a false feedback loop that can be hard to change.