It seems Dr. Karl was a victim of political maneuvers recently when supporting the 'Intergenerational Report' and has now made a public statement saying that he was promised it would not be 'politically biased' report.
"I thought that people would know the difference between a report and a policy document.
"And this actually, as a report, seems to have some policy in it."
ABC article: http://www.abc.net.au/news/2015-04-15/dr-karl-backs-away-from-political-intergenerational-report/6393152
What Dr. Karl had to say about this: (Audio) http://www.abc.net.au/news/2015-04-15/dr-karl-distances-himself-from-the/6393178
or watch the video on Youtube: