I'm half way through replacing the pads on the rears (this is a JDM non brembo setup), I have opened the calliper and removed one side of the pads but cannot remove the other side even a millimetre. 
  
I have been following this guide - viewtopic.php?f=35&t=16773 
  
I have removed the visiable pad from this picture; 
 
  
am I missing something really stupid here?