EWL
You are missing the point. As so is everyone else.
They can sell AU-DPS-AU return. There is no issue bringing back the punters as long as it's a return journey from Australia. They can sell one way to Bali also.
There are no more empty aircraft. The only aircraft that were empty were 3 on Day 1 as they got the pax to Bali, but considering they can only take Australian originating return journeys, they obviously have no punters for the first legs back.
Hardly a major issue, how many pax actually originate in Bali? It's less than 5%.