Awful is a little strong. 2.70 and a 1.31 WHIP isn't an awful pitcher. His K/BB this year is subpar, yes, but it's a little strong.
Leaving him in against the lefty was a mistake. Reds could still be tied or ahead 2-1 if the right move was made.
Heisey doesn't get a lot of credit for that last at bat, either.