“Incomprehensible”? Hardly. It’s a well established pattern.
When did Jesus give Judas the boot? I must be missing that page, because, according to the Gospels, Judas walked out of the Last Supper by his own choice. In fact, if anyone got the boot, it was Peter. But there's Peter choosing to repent of his sins and being given the role of shepherding the flock. And then there's Judas despairing of his sin and making his own exit from the world. If Judas repented and did not hang himself, He would have been forgiven in the Upper Room and given a great reward (read: Prodigal Son).