If we can speculate about physical injuries, we can speculate about mental health/illness issues.
Once people don't even bat an eye at that, we will know that mental health/illness is no longer stigmatized.
We aren't there yet, so I won't speculate on Petey.
He is capable of more. Something mental or physical or allegorical is getting in the way, probably all three.
I will say this. Garland at one time wanted out. Ask him now. May still want out, but he seems happy for now in his current situation. Ditto for Brock. Excuse me, BROCK.
These things come and go in waves, sometimes tsunamis. Being positive (as a coach, as a media dude, as a fan) about the situation is always the best recourse. Zoe Seldana explains it extremely well, when she spoke of doing the original Avatar with James Cameron.
Of course, all of this positivity is anathema to me because I am . . . well, you know . . .