Joey Fatone got brutally honest about the moment when Justin Timberlake's decision to leave 'NSync for a solo career frustrated him. "We just did a stadium run and then we did an arena tour. Then Lance [Bass] had the opportunity to train as an astronaut and go into space," Fatone, 49, recalled in the Boy Band Confidential docuseries on Investigation Discovery, which premieres April 13 and 14. "Then Justin was like, 'Hey, I want to do my own solo stuff.'" Fatone was initially supportive of Timberlake's request, adding, "At first, my brain's like, 'Cool, do it and have fun.