What did they ever do to him? They said they had no interest in bringing him to camp (they didn't), and would not be offering him a contract (they didn't). Yet, they allowed him to work out after practice, using team facilities, to allow himself to train, even if that meant he became attractive to a competitor. They even allowed him a private workout to show where he was physically.
They did not lead him on, nor did they prevent him from pursuing options elsewhere. To me, they went above and beyond in this instance. The fact that he no longer fit into their plans was in no way mistreatment.
I'm trying to figure out if it is the fear of change thing that drives your criticism, or do you simply fall into that fan trap of falling in love with the players, and thinking of them as always at their best, and not as they are at the present.