One of the good samaritans, Rob Meitach, said the air-rager even bit him on the arm.
"I don’t know what was going on with him", Meitach said. "Maybe a bit of substance abuse, he was clearly drunk".
According to others on board, the man had acted suspiciously before the flight. Passenger Billy Bruce told ABC News she complained about him at the airport. "They pulled him aside before he got on the plane, but he shouldn't have been on that plane", she said.
A spokesperson for the airline said the passenger was held by authorities on returning to Singapore.
"Etihad Airways takes such incidents seriously and has a zero tolerance policy towards disruptive behavior in-flight", he added, apologizing for the delay.
After its impromptu intermission, the flight eventually landed in Brisbane without further interruption.