One of Ireland's best-known developers says NAMA has "destroyed" his business and was "hell bent" on taking him down.
Johnny Ronan says the agency had too much resources but not enough expertise - and has compared it to 'a butcher performing heart surgery'.
But his evidence may be overshadowed by his use of a proverb which has been closely associated with Nazi concentration camps.
Mr Ronan is best known for his role as a 50% shareholder in Treasury Holdings, which was behind the National Conference Centre and an ambitious project to redevelop the iconic Battersea Power Station in London.
It is over this project that he is most frustrated - claiming that NAMA moved to call in his company's loans relating to Battersea at the same time as it was providing funding for another project in London with a lower return.
He says NAMA was given wide-reaching and potentially unconstitutional powers - with a budget so large that it had the resources to win any dispute, whether it was correct or not.
He also complains that NAMA used the same firm of solicitors as he had always used, and forced them to drop him as a client - so that he had no lawyers when he needed them most.
In summary he says NAMA Was "hell-bent" on taking him down - and he questions why an agency so large wasn't run by people with industry experience, but by civil servants.
He argues that this staffing arrangement is like "asking an accountant to fly an airplane, or a butcher to perform heart surgery".
But his points may be overshadowed by his final lines. He says he's glad to be out of NAMA, but says Ireland needs to learn from its mistakes - before finishing with the words 'Arbeit macht frei'.
The end from Johnny Ronan is still there. I'd say about 5% censored. pic.twitter.com/S26qyCqBPE
— Tom Lyons (@TomLyonsBiz) September 24, 2015
This phrase, meaning 'work will set you free', was infamously displayed at the entrances to concentration camps in Nazi Germany.
Whether intended or not, the unfortunate inference of his comments could well overshadow his claims about the working of a major State agency.
