Mr Simpson was in the same year at Bethlehem College as Mr Fellows. He said his mate was "a good guy" who was only following instructions.
"I do feel sorry for him and, it's more because I know him, but he wouldn't intentionally do anything that would hurt somebody else," he said.
"From what I understand, he had been told not to say anything and he was only following those instructions.
"I absolutely do not think he deliberately intended to shift the blame. He would have been trying to do what he was told was the right thing."
Mr Simpson, who moved to Auckland to study business, said Mr Fellows would have been carrying a huge burden since the January 15 crash.
He had not spoken to Mr Fellows since the accident and when he tried to make contact via Facebook he found Mr Fellows had deleted his profile.
"I remember him as being quite mature and really easy to get along with.
"We didn't really hang out at school but he was a really nice guy," he said.
"He was a really good rugby player, and he was very down to earth and quite liked. He never got into trouble."
Mr Fellows was named in the Bay of Plenty Under-18 representative team in 2012.
Bay of Plenty Rugby Union academy manager Dean Jennings said he had seen Mr Fellows play and described him as a "motivated" young man.
Auckland lawyer Gary Gotlieb said he could understand Mr Fellows' actions following the crash.
"At the end of the day, you can understand why this young fella did what he did after taking advice from more senior people than him, and clearly it was bad advice which has only elevated a terrible disaster to another dimension."
Mr Crosbie told the Bay of Plenty Times he could not answer questions about the crash, including who knew what, what happened before and after the crash, and who made the key decision to withhold information, as these would form the basis of the board of trustees' inquiry.
He did not have a set timeframe for the inquiry to be completed.
"We expect the inquiry to take weeks rather than days and, until we know the outcome, we don't know what may or may not be made public," Mr Crosbie said.
"That may also depend on any other ongoing investigations.
"We simply can't answer questions about the Kenyan police investigation, as the school authorities don't have information about it at this time."
The board of trustees had employed a private investigator to assist.