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After being excluded from the Grammy performance lineup for two years following his assault of then-girlfriend Rihanna, Chris Brown not only hit the live stage to perform twice at this year's event, but walked away with the prize for Best R&B Album, too.

While anti-domestic violence groups, music fans and fellow celebs like Miranda Lambert took issue with Brown's return to the awards show, C-Breezy has spoken out against his critics in a defiant Twitter rant (surprise, surprise).

Outspoken country music star Lambert was one of the most vocal stars to express her outrage at seeing Brown onstage at the Grammys. The singer, whose parents ran a shelter for abused women while she was growing up wrote, "Chris Brown twice? I don't get it. He beat on a girl ... Not cool that we act like that didn't happen. He needs to listen to Gunpowder and lead and be put back in his place. Not at the Grammys.

But the embattled singer is refusing to let his critics spoil his first Grammy win. "Hate all u want becuz I got a Grammy now! That's the ultimate f**k off!" he raged on Twitter in a message that has since been deleted from his page. "I'm back so watch my back as I walk away from all this negativity," he added.

But Brown wasn't the only one to come under fire for his Grammy return. Recording Academy bosses were forced to defend their decision to invite the controversial star back to the show. Neil Portnow, president of The Recording Academy insisted evaluating artists on their personal lives is a "slippery slope that we wouldn't want to get into." Likewise, Grammy producer Ken Ehrlich said, "He really deserved a second chance."

Do you think Breezy deserved to hit the Grammys stage twice in one night and win the Best R&B Album award?