Breandan MacCionnaith argued it may be “guilt” which motivated Tony Blair to attack him in his book.
Mr Blair paints a portrait of the Garvaghy Road Residents coalition spokesman as someone who took “unreasonableness... to an art form.”
But Mr MacCionnaith said he did not recognise himself in the book and suggested Mr Blair was “stretching the truth” as he admits elsewhere in his dealings.
“It may be guilt on his behalf, if you go back and see the numbers of deaths which were caused because of the Drumcree situation,” said Mr MacCionnaith, now general secretary of the republican splinter group eirigi.
MacCionnaith, who met Blair on at least four occasions, including Downing Street, said: “It doesn’t annoy or surprise me in the slightest.
“It is up to him to explain why he takes that line.”