The cricketer-turned-politician, who made clear his displeasure with BJP, parried queries on whether he would join Aam Aadmi Party, saying he will be standing wherever the interests of Punjab are served.
Sidhu alleged that he was told to keep away from Punjab to "serve selfish interests," indicating that the BJP was acting under its ally Shiromani Akali Dal's pressure as Akalis and Sidhu have had a long spell of hostility.
"It happened three or four times," he said, adding that it cannot be "tolerated" even once as "no party in the world is bigger than Punjab for me."
"Navjot Singh Sidhu had won four elections but when there was a wave in favour of Modi sahab, then Sidhu was drowned along with rivals. I was told you cannot fight from Amritsar. You fight from Kurukshetra, you fight from West Delhi. I did not leave my roots then nor did I care about profit and loss."
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"I said I will not fight. I have no wish for any post but I will not break the trust of those who made me an MP from Amritsar and have the highest honour in 21 generations. Now you tell me that I should leave Punjab. Tell me what is my sin," he said, speaking about his disenchantment with the BJP.
Asked if he will join AAP or if wants to be the chief
Sidhu spoke at length over his political innings in the BJP starting from 2004 Lok Sabha elections and how he delivered Amritsar seat to the party again and again only to be kept away from the state's affairs and then denied the seat in 2014.
He also used the opportunity to highlight his commitment to the state.
Sidhu said he fought in 2004 on the request of the then Prime Minister Atal Bihari Vajpayee and won the seat with over 1 lakh margin, adding that he won it twice more including in 2009 when he was the only party MP among the 50-51 seats in the plains of north India.
Top party leader Arun Jaitley had contested from Amritsar in 2014 but lost to senior Congress leader Amarinder Singh.
Sidhu, a cricket commentator and fixture at comedy shows on the television, recited a number of couplets and poems to underscore how he was treated as a "sinner" by the party without being told the reason.
The Sikh leader, known for rapid-fire bytes, said he also worked for the victory for his wife Navjot Kaur Sidhu from a difficult seat.
Akalis are in power in Punjab with the BJP as their junior ally. AAP has emerged as a strong force in the state and Sidhu's departure from the party is seen as a major setback for the saffron party ahead of Assembly election next year.
BJP has maintained that Sidhu has not quit the party yet.