Satou threatened Key with beheading, telling him that his memories would vanish with the new head growing, but we know it is a lie from the biker Ajin (he was beheaded in his bike accident and retained all of his memories).
Since Satou had his own head blown off "onscreen" (yeah, its manga) at pointblank dozens of times by the special forces, and his seemingly extensive knowledge of Ajin powers, the question is:
Does Satou know that an Ajin's memories are retained even when beheaded by the time he threatens Key?