If you watched that entire T.I. episode to the end you would know that Ali was dirt dog tired, he said he had been up since 3am that day and was tired as shyt.
He got fired for not contributing to the show enough, he was constantly late and didnt really particiapte as much. He talks about it (subtly) on his own podcast here.
As far as the 2 cac producers, Gas Digital apparently shuffle their producer talent around based the needs of the shows and talent pool.
Yeah the way he came off on Dante was some bullshyt, I wasnt diggin that at all. And all those ATL comedians was dikk-eating T.I. like hell