Etoundi, who claimed bronze in the 77-kilogram class weightlifting in Glasgow, was forced to leave the Games early, after fracturing the nose of Welsh weightlifter Gareth Evans on Wednesday.
The 29-year-old was detained by police following the incident, and was eventually forced to pay Evans £400 in damages after fracturing his nose.
Etoundi will consequently miss the closing ceremony in Scotland, with Australian officials boarding him on an early flight home.
Australia's Commonwealth Games Association chief Perry Crosswhite said it was an unfortunate happening for the former Cameroon representative.
"It's very sad for Francois. We're disappointed in any athlete that doesn't abide by the rules and goes off the rails a bit," Crosswhite said.
"I haven't spoken with him yet but the legal people suggest he's feeling remorse and he's sorry he did it."