When Fumero returned to OLTL in 2004, he only signed a four month contract for Dena Higley rewrote the storyline so that he was not really Cristian, but rather a surgically alter imposter who has been brainwashed into killing Tico Santi (Javier Morga). This allowed for an easier exit since the character no longer had any ties to the show. To facilitate a possible future return to OLTL, Fumero's final scenes had him learning that he was in fact Cristian Vega but months of torture had lead to him developing amnesia. In September 2005, he returned to One Life to Live again this time making a long-term contract with the soap.
--wikipedia
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