Last week there was speculation that CM Punk suffered a concussion at some point during the Royal Rumble match, however those reports proved to be untrue as Punk passed an ImPACT test the Monday before his walk out and was said to be fine.
Although he did not suffer a concussion, however, Punk was indeed banged up following the Royal Rumble match, and according to PWInsider.com the creative team was told the next night on Raw that Punk went home because he "got his bell rung" during the Rumble.
There is belief in the company, and it could be because it was passed down from either Triple H or Vince McMahon, that Punk walked out simply because he was banged up, and not because he has been frustrated creatively, burnt out, or unhappy with his match plans at WrestleMania 30.
It is unknown what kind of communication, if any, has gone on between Vince and CM Punk since he walked out, but Vince might be under the impression that Punk left the company for no other reason than because he got hurt during the Rumble match.
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