OK - so this probably isn't the best 'fix', but it worked for me -- and this is after taking one back and trying on a few in the store with ALL OF THEM not completely closing.
Put the cover on...open it and flip the phone over...then take a finger along the spine and pull the cover out about 1mm. From the back, wedge your finger right beside the phone and then pull it out. You'll need to work your way down the spine, but should be able to see how far you pull it out with each tug.
** Be sure not to rip it! Use as much leverage as you can, and get as close to the spine as you can. **
Don't bitch to me if you rip it, I just figured this out (day 2) and hopefully I'll be happy with this cover.