Theoretical alternate path for "Enemy of My Enemy"

So after observing how Black Spindle and No Time were obtained in changing the course of a Daily Heroic, a thought occurred to me earlier today. When I was doing Solar kills with other bounties for the Daily, I thought ahead to those three wizards who corrupt and Take the Cabal warleader for Oryx. I wanted to see if I could damage or kill them. Well, it turns out they have the kind of high shields from public-event Centurions or Urzok, but I did manage to kill one of the three before the Cabal startes being turned. I'm curious... if they made the wizards killable before that point, would killing the wizards quickly make the story trigger the boss being Taken still? Maybe he becomes the new boss, or maybe he gets taken anyway via a scripted environment effect. Should be able to melt all 3 with a fireteam of three high light solars to test. In my experience, if the game didnt want us to kill something before or during a scripted event, the mob would be Immune (Taniks, Omnigul). Just a thought.