CM Punk, 35, reportedly walked off the job on the evening of Jan. 27, after telling WWE boss Vince McMahon that he was "going home."
Punk's actions came as a bit of a surprise, since he lasted nearly 50 minutes in the Royal Rumble match on Sunday evening.
The WWE seemed to be setting up a CM Punk vs. Kane feud since that is who the Chicago native was thrown over the top rope by.
Unfortunately for wrestling fans, that storyline seems unlikely to play out since Punk was not on hand for the Monday Night Raw show in Cleveland, the night following the Royal Rumble.
Punk was apparently left off the Monday Night Raw show after a series of re-writes, and he then told McMahon that he was going home.
Punk will apparently not be on any WWE live shows moving forward.
Earlier this month, Punk hinted that he might want to test his skills in the UFC.
"I think if I talk to Dana [White] about it, it becomes that much more real," Punk said of a possible stint in the UFC. "Plus if you're Dana, what do you do with a guy like CM Punk who comes to him and says that?"
Punk isn't quite sure if he should start out on smaller regional shows or if he should jump right into deep waters with a fight on one of the UFC's PPV cards.
He did add that he would be open to trying out for a run in the UFC by competing on "The Ultimate Fighter" reality show.
"Sure," Punk said when asked if he would do the show. "That's the interesting thing. Not tooting my own horn and saying I'm a megastar or anything, but do you put CM Punk on [The Ultimate Fighter]?
"See that's the thing. We're talking about it. I don't know."
Punk knows fight fans would pay to watch him compete even if he got ravaged by a "real" MMA fighter. He says he's motivated by those who doubt he could actually fight in the UFC.
"I have this notoriety and I have this presence, so do you put that on a small show or do you start off in the UFC? Maybe I just get guzzled. Who knows? But think of all the people who want to see me get my ass kicked!" Punk exclaimed. "Think about that. So it's a really interesting question I think.
"It's like what do you do with that? Do you put me in a UFC Octagon and does that do a good buyrate because people are interested in seeing it, or do people just want to see me get beat up? And either way everyone makes a bunch of money. I get punched in the face four nights a week, and I'm not saying it's any easier or any harder than what I do. There's similarities and there's differences."
Punk said in that interview that he had less than a year left on his WWE contract and that the promotion's travel schedule is grueling.
Punk was then spotted at the UFC on FOX 10 event in Chicago, before walking out to the Royal Rumble in a Gracie Jiu-Jitsu hooded sweatshirt.
Time will tell how the situation plays out, but the writing is on the wall that Punk is shifting to the MMA world.