On February 19, 2003, guitarist Curiel left the band due to his side project, "The Accident Experiment", and "spiritual differences." However, Curiel claimed that he was actually kicked out of the band. Curiel was replaced by Jason Truby, former member of Christian metal band Living Sacrifice, and assisted with the recording of "Sleeping Awake", from "The Matrix Reloaded" . In an interview with Yahoo! Music, Sandoval stated that Truby is the reason why the group is still together. On November 4, 2003, P.O.D. released their fifth studio album, "Payable on Death", which saw the group shift from their well-known rapcore sound to a darker, more melodic metal sound. The album was hit with controversy due to its "occult" cover, which led as many as 85% of Christian bookstores across the United States to ban the album. With the help of the album's hit single "Will You" and "Change the World", it went on to sell over 520,000 copies and was certified Gold. Sometime after the tsunami in Asia, many singers, musicians, and actors/actresses, including Sandoval and Bernardo, participated in the recording of, "Forever in Our Hearts", with all proceeds going to benefit the tsunami relief.