It was found he had set up a bank account in the name of Hadaad Syndicate and had made 72 fraudulent payments into it, totalling $238,846.61.
Defence lawyer Anne Stevens said Pettitt's gambling and drinking addictions were more in the nature of an illness and could not be described as greed. Pettitt had publicly acknowledged his offending and his background issues of gambling and drinking.
The shame was "absolutely enormous". He had lost his home, his position and his reputation.
Pettitt had been co-operative with the auditors.
He had handed over his entire superannuation of $54,297 to try to put matters right and the bank would be taking the full proceeds from the sale of his house, Mrs Stevens said.
Judge Crosbie said while some funds had been recovered from Pettitt, it was likely the remaining $188,000 would not be recovered, with proceeds from the sale of his Mosgiel unit to be returned to the bank.
Pettitt had been receiving counselling for alcohol and gambling addiction, which began 12 years ago following a relationship break-up.
Family members declined to comment outside the court yesterday.
Also declining to comment was the University of Otago.