Predicted. Togami really is a sly bastard, getting the real culprit to let their guard down before he rails them, and creating a target for other murders in the coming days. It's a bit of a risk to himself, yeah but the end rewards are worth it.
To elaborate: Togami has tied Syo's hands now. She can't kill, otherwise the rest of the group knows who she is and she'll go immediately. She can't help but kill that certain way, she refuses to do anything less. She's one big bullseye now and nothing else. It was the best way he could have played it.