Weird. I thought they were being really smart and sort of admired the fact that they were sticking to a plan despite the fans calling for the rookie a few times this year.
I understand what someone said above about a controlled environment but they seemed to be on a good run with Fitz, especially since Chan is once again calling the plays for him. Maybe Chan has mentioned all the killer plays he'd be able to draw up with Tua in there.
Maybe they genuinely think they're a much better team in there and since we've looked so bad they feel they could challenge for the division