They were worried about a grievance. They went out of their way to show they were giving him a chance- all the while waiting for a slump like the one he just had.
Of course, it took him having a slump, and that had to be part of the equation, but it's almost a sure bet any fair to mediocre player will have a slump at some point in the season. It was going to happen as soon as he slumped.
Yes, if he never slumped, things might have gone differently, but that was likely not going to happen. It was in the cards all along, IMO.