Blustering bully backs off
http://www.bishop-hill.net/blog/2014/2/25/blustering-bully-backs-off.html
Michael Mann finally seems to have had his bluff called. Having referred to Andrew Bolt as someone who was paid to lie by Rupert Murdoch, he has been on the receiving end of a fairly blunt invitation to retract the allegation and apologise or face the consequences.
This appears to have had the desired consequences.