I don't think Rocco will be fired unless the rest of the season goes catastrophically bad, like a 10 game under .500 finish.
But if the Twins end the season at .500, should he be fired? I'm not sure. I probably lean toward "no" but it's not an easy decision.
Should the Twins finish the season strongly, he stays on for next year. It's a no-brainer at that point.