OK guys. I was wrong and caught out by the addition of some extra flying. I sincerely aplogise.
That said, the extra flying is from places that couldn't help the Tasmanian problem with these services originating in Perth and Cairns. To assist with extra flying to the Island Qantas would need to have the spare aircraft on the south-eastern corner of the Mainland or put on some very unproductive flying to get aircraft into position.