Ollie already told Renny Dan told him to say her name. He said he'd never say Renny's name and Renny didn't believe him. On the same end though if Dan went through with the deal Renny would eventually be gone and it'd be Michelle-Dan-Ollie-Jerry F4, so Dan saved them regardless.
She/Keesha said even still that they need Memphis and Dan right now. Everyone is aware of what happened, Dan just wanted to get some drama surrounding everything so there'd be less attacks and more talk and suspicion. In this case it kind of worked, as Ollie and them are now trying to defend their character which Dan destroyed, Dan already had everything covered and seeds planted. He divided the entire house singlehandedly in that one thing and there's so much drama around it that he barely gets 75% of the discussion.
So yeah, Dan has his bases covered. He actually pulled off something amazing.