 Oedipus "chooses" not to return to Corinth after hearing the oracle, just as he chooses to head toward Thebes, to kill Laius, and to take Jocasta specifically as his wife.In response to the plague at Thebes, he "chooses" to send Creon to the Oracle for advice and then to follow that advice, initiating the investigation into Laius' murder.None of these choices are predetermined.