That's a terrible basis for making a decision ESPECIALLY in a 0-0 game! He had never pitched beyond this point in his entire career. There was no evidence, no data point for sending Treinen out for another inning in this situation and expecting a good result.
Who gives a crap, his performance validated Williams decision, Treinen pitched VERY WELL in the 6th. If you had described the contact he would get I would take that anytime, any inning. Too bad the defense sucked, how the hell to you expect Williams to anticipate that?