The so-called 'Anglo Avenger' has vowed to run against former government minister Frank Fahey in Galway West in the Irish general election.
Mayo property developer Joe McNamara (41), who is at loggerheads with Anglo Irish Bank over debts of ?3.5m, made the impromptu announcement at a noisy public meeting on the economy in Galway last night.
Mr McNamara hit the headlines last September when he drove a cement truck bearing the slogan 'Toxic Bank' and 'Anglo' in red letters up against the gates of Leinster House.
Another slogan painted on the vehicle said "All politicians should be sacked".
Last April the same cement truck was parked outside the Anglo Irish Bank branch in Galway city. The engine was running but the doors were locked.
Last night's meeting at a Galway hotel was organised by Mr Fahey and the guest speaker was Dr Alan Ahearne, economic adviser to Finance Minister Brian Lenihan.
It was chaired by Aer Arann founder, businessman Padraic O'Ceidigh, and attended by an estimated 250 people.
There was tight security at the meeting, but Mr Fahey stressed he had not requested a garda presence. He insisted that the meeting was not political and that Dr Ahearne and Mr O Ceidigh were there in an independent capacity.
But he was shaken when he was booed, but also applauded after his opening address which outlined his views on the economic downturn.
Meanwhile, Fianna Fail's general election plans in Mayo were thrown into disarray yesterday when former inter-county footballer Dermot Flanagan withdrew his name as a potential candidate.
The Dublin-based barrister said his decision to pull back from the contest just three days after he made a firm declaration of interest came due to unforseen work commitments. Mr Flanagan is a son of the late Sean Flanagan, a former TD, minister and MEP.