I don't think they pull the plug on Dozier just yet. What has he had 3 homers in the past week? Isn't that why he was brought in? Slow starter.
I'm thinking they are disappointed with Difo's glove, TBH. It's not carrying his bat every day. Kieboom is plenty comfortable at SS. All he needs to be is adequate with a good bat while Turner is out. Then Dozier is an endangered species, either if he fails or if he does well (trade bait).
Dozier has been hitting .237/.341/.500 since his three hit game. That's pretty much his career line.
I think you're right. I think they bring him up to try him out at SS.