What he didn't say was so obvious he might as well have screamed "SHE'S STILL GOING TO DIE YOU FOOL." Like I said, at minimum he might have given her over to Kieran to deal with, but odds still pointed to him doing it, either way Agnes was as good as dead by the end of that scene. So I spent the scene at the church fully expecting it to lead to a "What are you an idiot? I only said I wouldn't let *you* kill her" ending so when he got there the only surprise was that he killed the other people too.