I'm sure Booker enforced it, probably said if he doesn't wrestle he would lose his number 1 contender status.
Interesting that they throw Orton into the world title picture in a way. I'm still wondering what they may do with him, I could see Booker giving him and Rey a chance to get involved in the WHC match and it end up being a fatal 4 way which would be a lot better than just ADR vs Sheamus.
Cesaro beats Santino again ANNNNNND took a Cobra and didn't lose!!!!!