The actor-turned-politician and Patna Sahib MP, who had rankled the party by his presence at the rally and speaking against PM Modi and Amit Shah, sought to twist the knife with a couple of tweets.
Opposition leaders not bonded labourers to dance to PM Modi's tunes, says Mamata Banerjee and Chandrababu Naidu
Both the leaders' reactions came after PM Modi said that the 'Mahagathbandhan' (grand opposition alliance) was against the people.
The announcement was made after the TMC supremo Mamata Banerjee hosted a tea party here for the top leaders of 14 opposition parties who participated in her united opposition rally.
Sinha has been at odds with his party over several issues and has criticised the demonetisation exercise and the implementation of the Goods and Services Tax.
The Janata Dal (Secular) supremo said a small group of senior leaders should be formed to decide on a roadmap on how they will ensure good governance.
Sinha who quit the BJP recently said, under the present regime while praising the government was "desh bhakti"(patriotism), criticising it is "desh drohi" (sedition).