Honestly, with two outs and men on 2nd 3rd, the odds of only one man scoring and pushing it into late innings are long. More likely, either zero or two runs are going to cross home plate, making the "your only other cather" arguement moot. Plus, its not like it was the second inning and you were using your only back up catcher. It was the ninth and the game was on the line. Following your logic, AJ would never had been used.