IMO, there's no way Steven would not talk unless he has been explicitly told (multiple times) not to say anything.
Would that even matter? Don't you think he'd still fuck it up?
I absolutely agree that he will throw the tantrum of alltime if this comes together without him. But do think it will cushion the blow if Izzy is not either.
Oh yeah, there's still a very good chance he'd still fuck it up, even if he got a talk from the man. I'm just saying for him to go radio silent speaks way more volume than say, Izzy going radio silent. No guarantees it stays that way. All it takes is one night out and someone with a cell phone camera...