Lysacek did NOT say that he is retiring from the sport entirely -- and he was asked point blank on the Today show.
He was on the verge of tears during the interview. "My road to Sochi ends here."
(Lysacek was understandably emotional, although Matt Lauer's tone was very gentle.)
Nota bene: I'm mostly just paraphrasing.
Lysacek also said that the pain from his labral injury had become "unmanageable," and that doctors told him that training without full healing would put him at risk of permanent damage.
Regarding the question of retirement, Lysacek's answer was along the lines that he didn't want to end his career with his recent very painful weeks on the ice -- and that he wanted to be in control of his decision when to to leave the ice (the implication being that he didn't want injury to force him to make that decision).