Can't remove Otterbox 3D case?

I need to take my Otterbox 3D commuter case off my iPhone to put a screen protector on it. For the life of me I can't get this thing off and no one I've asked to help me can either. I've looked all over the internet for help but haven't found anything useful. Has anyone had any experience removing this case from their phone?

Otterbox.com

I've never owned this case, but I looked at the pics on the website. It looks like you just remove the hard plastic shell from the rubber layer, then remove the rubber part from the phone. Hope this helps.