Last night, Jay Brue hit a HR against the Cards in the 10th innings. Cards manager appealed that Bruce missed 1st base. Then, came out and spoke to the 1st base umpire about doing a crew review (Cards had already lost their challenge). Umpire agreed. When they showed the replay, it was obvious he touched the base. His whole foot stepped on top of the base. It wasn't a question about just nipping the corner of the bag as he turned or anything like that. Keith and Gary thought it was nuts that the ump entertained it and should have stuck with his call when it was that obvious.
My thinking is Matheny knew the umpire did not look to see if Bruce touched the bag and said it when he went out to talk to him.