Seth Rollins has been out of action for several months after suffering a shoulder injury back at Crown Jewel.The former World Heavyweight Champion recently gave an update on his recovery while on the Rich Eisen Show, where he also revealed plans to be in attendance at Saturday Night's Main Event on December 13."We’re going to stop through Chicago for the Cleveland game, just because we have a nice little route back from D.C. after John Cena’s last match,” he said.It seems that Rollins wants to be in attendance for John Cena's final match in Washington, D.C., but this could also be another piece of the mystery that WWE has been trying to paint since Survivor Series.A masked man attacked CM Punk to cost him the match inside WarGames, and he was hit with Seth Rollins' famous Stomp finisher, which has led many fans to assume that it could have been the former Vision leader.Rollins was also seen at Survivor Series without the brace on his arm, which has only added to the speculation.Is Seth Rollins the mystery man behind the mask?While many reports believe that it's Austin Theory who was behind the attack and is set to join The Vision in the future, there are others who have been pushing forward the fact that Seth Rollins faked an injury earlier in the year to play mind games with CM Punk.This time around, Rollins was attacked by his own team to write him off TV. He was forced to drop the World Heavyweight Championship, only for Punk to go on to win it. So it doesn't make a lot of sense for Rollins to be trying to pull another ruse. Especially after the brutal words Bron Breakker had to say about him on WWE RAW, and since he was kicked out of his own team.