If I was Atkins, I'd fire Montoyo while the season is still salvageable. Show the players that their play has consequences.
Hell, I would have fired Montoyo right after he threw that game against the Indians to prove a point to Chatwood, but there's been egregious errors since then and that was like what, 2 weeks ago? In the words of Shea Hillibrand, the ship is sinking lol.