As Kroger said on SKY, Shorten said over 100 times in the last couple of years that he was behind Gillard all the way.
At 1:41PM today he released a written statement backing Gillard.
At 2:00PM, yep just 19 minutes later, Kieran Gilbert got information that Shorten was now backing Rudd.
Shorten is completely untrustworthy. Typically Labor, his words are totally meaningless, he's just a puppet for his union masters and they pull his strings.
His opinion is that he agrees with whatever the PM says.