He only has so many choices to use. In the 6th inning, MOY isn't going to use Hildy, Rodney, or Reed, and Moya has pitched 3 days in a row. Reed or May would have been a good choice, but this is just as much on the front office as it is in Molitor imo. Clearly Molly trusts Matt, but if the front office wouldn't have made the horrible choice to sign him, and then the even worse choice to keep him up here, Molitor wouldn't be able to use him.