I do not believe for one second that Price has 'checked out.' He is a champion with all the pride and desire that go with that. I speculate one of the following:
1. His wife had a baby. He is distracted or, more likely, more exhausted than usual and the fatigue is slowing his reaction time. This is more plausible than many people would think, I suspect.
2. He is injured. This is all too probable given his history.
3. His mechanics are simply off and due to the ridiculous schedule, he hasn't had the proper time to make the needed technical adjustments.
I'll say this. This franchise cannot afford to sacrifice another season due to Price. He HAS to get back to his 'A' game by the playoffs.