I watched the show a few more times... I think the walkout was the planned by AS's genious mind !! Hints:
AS started noting down things when nothing imp was being said.. like when Debojit was taking about why his father could not come to see the show... what is there to take notes.. he was just showing us that hes taking notes so that he can use it later ...
AS and HR wanted to jump in but waited not not make it obvious that they planned it. AS started the main fight .. with his notes.. saying how Delhi voted 3% .. and Assam (Shaan said it was NorthEast .. AS's knowledge of geography is as good as his music sense) 80%. He started the whole heated discussion and took the focus away from the contestants.
Next when a man was saying this why the 3 should not have done it.. AS told the crew.. GIVE THE MIKE TO THE LADY .. SHE WANTS TO SAY SOMETHING .... AS PLANTED THE LADY who was ready with the punchline that AS had prepared India's voice.. not Assam's voice.. (yes Indian primeminister can be UP's prime minister 90% of the time )
I think Himani was the lead .. Vinit was next and Hem was just co=operating ...
HR knew that he had to turn it away from the revolt... Will be allow them to quit ... NO !! Right !!
AS is the most insecure .. because he knew his contestant was to go !! So made them wait till Debojit's fate is decided.
Vinit pointed out he had nothing to lose as he was already declared 2nd .. so one of the two of AS had to go !!
It was AS's whole masterplan !!