IDK that he's going to do anything, aside from try to keep things from blowing up between Carol & Tyrese. Not that it's worth anything, but in the comics, Tyrese and Carol were sleeping together when they were at the prison. His dumping her for Michonne caused Carol to kill herself. I'm wondering if they're going to bring those characters into irreconcilable conflict to service the original vision... I only wonder because this episode had a scene very reminiscent of the comics, where Tyrese got left behind among the walkers but fought his way clear. In the comics, when they were clearing the prison, something similar happened, where Tyrese got locked in a room with a ton of zombies and when they finally opened it to retrieve his body and finish off the zombies, he was sitting there alone on a pile of dead walkers and he was all oh hi, what took you so long?

They seemed to be calling back to that part with his bit in this episode, so maybe they're going to the "Tyrese makes Carol dead" notion too. Of course, before killing herself, she proposed a polygamous relationship with Rick and Lori so obviously they aren't going to follow the comics THAT close...