Chirau Mwakwere has lashed at President Uhuru Kenyatta calling him a demagogue who lied to have a damaging dossier just to get back to him for booting allegiance.
The former Tanzania envoy dared the president to release the dossier warning him that his administration, "will not take away my people's land."
Makwere and Uhuru parted ways after Jubilee allegedly sanctioned exploitative mining contracts and land injustices in the county.
Failure by Uhuru to consider him for any government appointments after winning 2013 polls also contributed to the strained relationship.
Though he was appointed an envoy to Tanzania two years later, Mwakwere's name featured in a list of most corrupt individuals.
The list was released by Uhuru during the 2015 State of the Nation Address to parliament.
He and others in the list of shame were accused by Jubilee of aiding the loss of Sh50 billion.
Makwere to concentrate on winning Kwale Governor race through the Wiper party.
He is vying against the incumbent Salim Mvurya who defected from ODM to the Jubilee Party.
"The list of shame was just created to embarrass me. If an individual had a right to sue even a sitting president, I would have done it," he said.
He spoke during an interview on NTV which was aired on Monday.
While in Kwale on May 25, Uhuru cautioned the former Matuga MP against lying to residents about land and mineral issues in the county.
"Stop the propaganda because we can expose you easily since we have your records...we know what you are," Uhuru said.
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But Makwere said: "Let the President release them, there should be no secrets."
Mwakwere said he has never signed any land leases, noting that when it comes to the development of the country, he is way above Uhuru and DP William Ruto.
"We were in cabinet together, we know each other very well. They celebrate SGR yet I created it from zero," he said.
He said when he was a minister, he oversaw the return of public land adding that Uhuru has handled the land issue in a colonial manner.
"The title deeds they are giving were lying somewhere in offices. They only issued them out. They did not give people land as such," the ex-legislator said.
Makwere said Jubilee should have taken settlements schemes or lands whose leases had expired and apportioned it to locals.
"But just to get title deeds lying in cartons in Nairobi and hand it over to people and take it as a great input by the government, it amounts to mockery," he said.
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Just like Makwere, NASA presidential candidate Raila Odinga has often said that for land injustices to end, grabbed lands must be repossessed.
Raila on many occasions pointed fingers at Jomo Kenyatta's family as among those who acquired chunks of land through dubious means.
He said the huge parcels of land held by certain rich families at the Coast should be divided to locals to end injustices.