Question about [spoiler about season 2]

While watching season 2, after Marie said Cypher had no V but we saw him control Jordan, I understood that he was actually his "dad" (burnt guy) but while he is under the school in a bunker he kinda threatens(?) to kill the burnt guy (himself) and almost does it too. Does that have a good reason or is it just to make people not suspect they are the same person?