Sheen's TV sitcom Two and a Half Men stalled in February (11) following a series of bizarre antics, which began with the star trashing a hotel room in New York over a missing watch and ended with his hospitalisation following an all-night party.
He was then fired from the show in March (11) after publicly feuding with producers and series creator Chuck Lorre - and the incident sent the actor on a downward spiral in which he spent several weeks making crazed public appearances.
He blasted TV executives and co-stars online, lost custody of his twin sons, staged a bizarre touring one-man show, and made famous a number of oddball slogans by insisting he was pumped with ""tiger blood"" and was ""winning"".
Now Sheen has spoken out to admit his behaviour was out of control, but he's adamant many of his madcap antics were done in jest.
During an appearance on U.S. programme The Tonight Show with Jay Leno on Thursday (15Sep11), Sheen said, ""It was like a runaway train that I was kind of the reluctant conductor of. And it just kept going.
""I said some things that were a little out there. I might have overshot the mark a little bit. But these were just metaphors. I didn't really believe I had tiger blood or Adonis DNA. These were just jokes.""
And when host Leno asked the star if he thought he had been out of control, Sheen responded, ""Absolutely"" before adding: ""I can't (do it again) Jay. I don't have the energy. I'm out of slogans.""
Later echoing the same sentiment on U.S. breakfast show Today on Friday (16Sep11), Sheen told fans, ""I think it's important that people see, that I see, and that I feel, that that was just one crazy chapter and one weird phase. I was this guy before it started and so I can be that guy again afterwards.""