I like to idea of Iruma finally getting regular updates. This war and snipes between groups almost ruined the translation entirely.
Now, to the chapter in question. It is clear that the inmates called that other dumb to Mirio's group so they can use him as bait and put the blame on him for the rebellion, the poor guy is fucked. Meanwhile, Iruma was helped by the girl from the Six's group and he is gone for now. The only thing that bothers me is that Mirio will still be relevant as an antagonist to Iruma.