You realize there's things like "paid time off" and such, right?
Punk could have X many days guaranteed in his contract where he doesn't have to work and could just be using them at the moment. If that's the case then he's not walking out or breaching his contract in anyway.
Methinks that sorta thing needs to be worked out before the guy is advertised.
I wonder how The Undertaker feels about Punk walking out.
Punk will be "rubbin' a nub" soon enough