I've been told that a large part of the fleet is still flying, other operators around Australia apparently jumped at the opportunity to use the aircraft.
It has been mentioned here on Pprune a few times that CASA Darwin had no problems with the Darwin operation. The local AWI's found no evidence of any wrong doing during the November audit. Which makes sense because the aircraft are obviously still able to operate.
I'd imagine as a pilot you would be extra careful to cross every t and dot every i if you were flying around in an aircraft with 'Barrier' painted on the tail