As RadarOnline.com reported, Stewart went public with the fact that Grant was banned from his show while speaking at a fundraiser for the Montclair Film Festival.
Stewart said the Brit actor was horrible to his staff. He's giving everyone sh*t the whole time, and he's a big pain in the a**."
'Turns out my inner crab got the better of me with TV producer in 09," Grant Tweeted late Friday. "Unforgivable. J Stewart correct to give me kicking."
Stewart has previously said no amount of "groveling" would ever get Grant back as guest on his hit Comedy Central show. He hasn't yet commented on the actor's confession.
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