Apparently Eli had stood there over Victor’s body, covered in blood, still holding the knife and shouting that he was a hero. That he’d saved them all. When no one bought the hero line, he tried to claim it had been a fight.
So, someone's death & resurrection doesn't sever the hold of Serena's power, but Serena's death DOES sever her power over them. Otherwise they'd all be keeping with the hero line.
