Nah, we need him in there for the drama. This is just going to make it even more entertaining because Kristina was the only person he could open up to and now she's gone. He's going to go even more bat ****.
That fact that John has now lost his right hand woman.
Even better than him leaving the house, being free -- because he is stuck there knowing the public hates him (the boos he got) with NOBODY to be the great alpha male too
. Bye Kristina!