JOE DOWNES : Jenson Button has labelled Lewis Hamilton 's doubters ' muppets ' .
JOE DOWNES : Jenson Button backed his compatriot to get his first win of the season at Sunday 's Russian Grand Prix .
JOE DOWNES : Jenson Button has labelled Lewis Hamilton 's doubters ' muppets ' and backed his compatriot to get his first win of the season at Sunday 's Russian Grand Prix .