In the last few months Punk has said that things aren't fair where he is concerned (usually when matches are made for him after he's argued with the GM at the time). Even out of the the ring on his DVD he says he's had roadblocks put in his way in his rise to the top of the WWE. So I think The Shield see things from his point of view and will intervene on Punks or anyone ones else behalf when odds are stacked against them. I don't think they are working for Punk as it's just to obvious, The Shield just happen to be aware to Punks grievances and agree with them and take action as they will for the other heels on the show if appropriate. They should helped Cesaro IMO though he didn't need it in the end. As that was a 'injustice' having to defend a title in fatal 4 way like that (wouldn't mind Kofi defending

)
I agree on the Maddox thing. How is it fair that his try out matches were against Ryback and then Orton a future and past main eventer. I think they should of attacked Maddox to start with to gain him a victory.
I don't get why they attacked Kane and Bryan other than at the beginning Kane spoke to them on the mic.