Justin Bieber snubbed by Grammys, manager blows hot on twitter...

Scooter Braun, superstar manager and Schoolboy Records boss, went on a mini Twitter tirade following Wednesday night's Grammy Awards nominations announcement. Writing to his over 2 million followers, the 31-year-old Braun defended his No. 1 client Justin Bieber who received no Grammy nominations. "I just plain DISAGREE," he tweeted. "The kid deserved it. Grammy board u blew it on this one."

Bieber's third album, Believe, was released in June and has seen two top ten singles -- "Boyfriend" and "As Long As You Love Me," the latter performed on X Factor earlier in the evening -- and another, "Beauty and the Beat" featuring Nicki Minaj, still building.

Perhaps making the snub sting even more, the 18-year-old pop phenom recently swept the American Music Awards, where he won artist of the year, favorite pop/rock male artist and favorite pop/rock album. The November show, aired on ABC, is a fan-voted event. The Grammy Awards, airing Feb. 10 on CBS, are decided by committees of industry peers.