During a hiatus on Vai's "Ultra Zone" tour in 2000, Mangini returned to Boston, where he served as an associate professor at Berklee College of Music. He also formed the short-lived band Tribe of Judah with former Extreme frontman Gary Cherone and bassist Pat Badger. Mangini appeared on other albums during this time, including a Rush tribute record entitled "Subdivisions" and his second and third Annihilator albums titled "All for You" and Metal, respectively. He also recorded tracks for artists Sal DiFusco, Bill Lonero and Chris Emerson.