I just finished Job earlier this week. he actually believed he was blameless through most of the trial. Elihu reminds him that he lacks humility. that is the Spirit speaking through Elihu, so in a sense Jon does have the Spirit of God with him. and then in the end God speaks directly to him, requiring him to forgive his friends before he can be restored.
Hopefully the people will find in themselves the same humility and bow before God in Christ. it is the only remedy.