FTR, I was surprised that Price came back out too, but Farrell had a reasonable explanation for bringing him back out, and going batter by batter. The next Astros batter, Marisnick, has pretty extreme reverse splits. He has a .300/.386/.720/1.106 slash line with seven homers and 13 RBIs against righties and a .209/.277/.326/.602 slash line with no homers (until last night) against lefties.
I'm not saying that leaving Price in was the right call, but he is not making his decisions as blindly as some seem to think he is.