Salman was right in calling Rahul a bhagoda, dhongi and mentally weak. This show can not have different rules for different contestants.
He comes outside the house, tweets in support of Siddharth to get his votes, knows which contestant has what kind of fans.
Salman was right in ridiculing and insulting Rahul.
And Rahul had a very dirty smile on his face while talking to Salman, besides cutting him again and again. Rahul's smile was extremely condescending and derogatory. His smile meant i can do any shit, you will have to take him back in the house! My apologies but it is very unfair to bring someone who left the house completely on his own free will to be back in the house.