Things Fall Apart Chapter 22 Questions

In chapter 22 Enoch commits the ultimate transgression when he rips off the egwuwu's mask in public. The spirit is said to have died, but we read that the man under the mask is simply shielded and lead away from the crowd. How can this scene possibly serve as a metaphor for the fate of the Ibo culture's religious traditions? Also, throughout our reading of Things Fall Apart, Achebe seems to poke fun at or find fault with both Ibo culture and the traditions of the Christians. Is Achebe more critical of one culture? Is he trying to say that they are both frivolous? Is he trying to provide examples that unite the two?