He gave the kid a chance to make his bones and he blew it. The kid would have gotten a lot of respect in the clubhouse for taking care of business.
A veteran would know what to do without being told.
No, he used the kid as a cat's paw because he was afraid that a veteran pitcher would get suspended. The kid was getting sent to the minors the next day anyway because of a recent trade. This was not a chance for the kid to become part of the team at all. He was a patsy. And Guillen's antics were embarrassing, or should have been. "Discussions" like that should take place behind closed doors, not on national TV.