"It appears the issue of Bihari vs Bahari (and Bihari Babu's absence) has been settled once and for all," he tweeted, following it up with "Wishing great luck to our victorious friends and appealing for introspection to our people. The writing was always on the wall".
A total of 4 tweets hours before the Bihar election results were official - the obvious context Grand Alliance leader and Chief Minister Nitish Kumar's reference to the Prime Minister as the outsider in the Bihar campaign and himself as the Bihari babu who was left out.
Speaking to NDTV, Mr Sinha said, "I'm sad my party has not done well, we could have done better. I was not part and parcel this time (for campaign). I was left out of the campaign. Accountability must be fixed."
The call of the day is introspection, modified and better strategy, teamwork and coordination in the future. Salute once again to Biharis.- Shatrughan Sinha (@ShatruganSinha) November 8, 2015
Calling for introspection, he added, "Why has this happened at the cost of own people? Was it someone's whim, fancy or arrogance? We lost a winning battle".
He said he felt the negative campaign of the BJP did not work with the voter who was looking for more positive and concrete ideas on crucial issues like employment and inflation.
Through the campaign, Mr Sinha has often struck a discordant note but other BJP leaders have refrained from commenting on his statements. Yet the man famous for roaring "khamosh" on the silver screen has been anything but that in life - adding to the BJP's problems in Bihar.
The Parliamentarian from Bihar's Patna Saheb had earlier tweeted that his absence from the campaign was "not by choice".
Later, he had endorsed Rashtriya Swayamsevak Sangh chief Mohan Bhagwat's controversial call for review of reservation policy -- considered a contributing factor to the BJP's defeat -- and then escalated his rebellion by meeting Congress leader Randeep Surjewala in Delhi, in the middle of the elections.