As it was said before, no manager in baseball pulls Kimbrel from that inning, despite his struggles. He had some control issues, but it's not like the Yankees were hitting him that hard. They only hit 3 balls off him the entire inning and two of them were weak groundballs.
And really, if the only thing that matters are results, the Sox did win the game. All Kimbrel did with his control issues was make it more interesting than it should have been. But they still won, which was not something that was guaranteed if they brought in Kelly...