The Warriors are caught up in an investigation into a Maori tourism qualification involving alleged overpayments of $6 million of taxpayers' money.
Nearly 100 players and staff "completed" an 18-week course in just one day and a member of the club board - who also worked for the wananga that ran the tertiary course - has been referred to the Serious Fraud Office.
Donna Grant has resigned from the Whakatane-based Te Whare Wananga o Awanuiarangi and offered to assist with any potential SFO inquiry, according to her lawyer.
"She is absolutely confident she has done nothing wrong and is happy to co-operate," said Richard McIlraith of law firm Russell McVeagh.
A prominent figure in kapa haka and Maori performing arts, Mrs Grant is the daughter of Sir Howard Morrison and Sir Owen Glenn's sole representative on the five-person Warriors board. She was also the driving force behind the Warriors Foundation, the club's now defunct charity arm, which delivered the Hei Manaaki course to 94 players and staff from the league team.