No way is Christian turning heel. If they did that, do you realize what their options of faces would be for that brand? It would only be Tommy Dreamer, Goldust, Hurricane, DJ Gabriel, and these two new guys Yoshi and Tyler. So you'd have a guy about to be released (Gabriel), two newbies who aren't ready for such responsibilities, two washed up old stars, and a guy who has such a serious neck injury that you never know for sure if - when he returns - he could wrestle a bad match and be out for another year.
Absolutely no chance Christian turns heel until he moves to another brand.