Wikus a metaphor for Jesus??

The main metaphor in the film is so obvious it is interesting to look at other metaphors that don’t quite fit. For instance, I found that some online bloggers see a resemblance to Jesus in the skinny white character Wikus. They argue there is a Messianic narrative tied into the film through Wikus and the main prawn in how they liberate a population (or we are led to assume they will eventually). Wikus is put in a position of power where he is in charge of evicting the prawns and moving them to a new area. After he begins to morph into a prawn and change his way of thinking a Christ figure emerges that is split into two characters: Wikus sacrificial human body and the prawn Christopher Johnson, the soul. So, Wikus’s human body is sacrificed like the story of Jesus on the cross and his soul is Christopher who descends into the sky and is a representation of the resurrection (or at least that’s what I think they are getting at no one goes into much detail). In order for this metaphor to work, at this point in the film, Wikus and Christopher essentially become one character. When Wikus is defeated Christopher ascends into the cross shaped alien mothership, vowing to return in three years to rescue Wikus and turn him back into a human. This is a view held by some online critics of District 9. Some believe that all the self sacrifice that eventually leads to a cross shaped space ship to fly away and free the aliens is a Messianic symbol that is to blunt not to notice.
After reading a few of these suggestions I can’t help but think this metaphor is stretching it a bit too far. There is some convincing evidence that Wikus could be a Jesus metaphor but it becomes cloudy because he only resembles Jesus in one scene. Throughout the entire film he is apart of the oppressive MNU relocation program and he even takes pleasure in alien pain (he finds amusement in the sound of popping alien eggs when they are burning). Only when he decides to sacrifice himself is there any sort of resemblance to Jesus. Even then, in order to make the metaphor work it must be split into two characters, Wikus and the alien Christopher. Also, upon watching the scene where the spacecraft ascends into the mothership, the cross symbolism is pretty weak. I do agree there are some ties to Christ, for instance, when (Christ)opher vows to return in three years to save his people. But this was most likely done so Blomkamp could make a sequel. There are some distant ties but one really has to look deep (and make some stretches) in order to find them, to the point where I feel Blomkamp had no intention in making Wikus a Christ figure.