Coutts was eventually fired and the band disbanded. Weiland went into rehab and released a solo album during this time. After Stone Temple Pilots' break-up in 2003, DeLeo and his brother Dean joined Filter frontman Richard Patrick and drummer Ray Luzier to form the band Army of Anyone. The group met after Patrick contacted the DeLeos about writing material for Filter's fourth album. The band eventually called in Luzier in for an audition, found the formula worked, and the band was formed. The band's self-titled debut album was released on November 14, 2006. The album became a critical success; some went as far to label the album as one of the best of the year. DeLeo summed up his sound on the album as follows;  However, Army of Anyone ended up going on "indefinite hiatus" in 2007 after disappointing album sales and Patrick's return to Filter. In 2007, DeLeo played bass on songs for Japanese rock band B'z, including two on their album "Action". He also contributes bass to five songs on their 2019 album "New Love", including "Rain & Dream" which also features Joe Perry. In 2016, DeLeo appeared with Kings of Chaos. DeLeo is a former employee of Schecter Guitar Research and built the prototype of what later became his signature model while working there. The Schecter Model T was his primary live instrument during his years with Stone Temple Pilots. The basses original configuration featured a 34" scale neck and Duncan pickups in a "P/J" configuration. Schecter has since marketed several variants of this theme, including a 5-string model with a 35" scale length, and models with pickups from different manufacturers. He is known for his smooth style of playing, with infusions of jazz, '60s rhythm and blues, and hard rock creating a rather distinctive tone. His primary influence is legendary bassist James Jamerson. Other influences include the late John Entwistle of the seminal rock band The Who, Rocco Prestia of Tower of Power, Chris Squire of Yes, and John Paul Jones of Led Zeppelin. DeLeo is known for his riffs; he created most of the signature riffs for Stone Temple Pilots, and wrote and arranged most of the band's songs. Although he primarily uses the Schecter bass live, for recording purposes he has used a wide variety of basses, and has a fondness for oddball off-brand basses from the 1960s, particularly short-scale hollowbody basses which he strung with flat wound strings.