Remember, Quintanilla, Herrera and Stewart were ALL called up after Tulo/Barmes went down (Baker's in the mix, as well). Therefore, this club will have a major logjam in the infield when Tulowitski and Barmes return.
Barmes was raking at the time of his injury, and should be able to reclaim 2b if he returns with a hot stick. That's far from a given, though.
Stewart's been platooning against righties and seems like the odd man out ... the franchise would be better off with him getting regular ABs in AAA. One of Quint/Herrera will certainly also return to the minors, with the other (maybe) sticking to join Baker as a bench/platoon guy to insure against a Barmes slump.