I think you are correct in that the piece needs to move for orientation.
As we get closer to the introduction of the Bionic we will see a rash of Charge buyers remorse as user look for an excuse to have VZ swap their Charge for a Bionic. I'm not saying the OP doesn't deserve a perfect device out of the box, but as soon as I see a mention of "Bionic" in a Charge complaint I think to myself "oh oh, here comes the jumping ship crowd to the latest new device"
I see this happen at every introduction of each new device only to see the new device have even more issues and then wait another year for an update which solves only a few of the minor ones.
That "little" rattle must be normal though in the Charge! It doesn't phase me anyway especially now that I'm now able to stream Netflix on this Charge's big beautiful Amoled screen
I don't regret for a second at least "my" decision not to wait for the Bionic, once they sent the Bionic back to the drawing board I jumped on the Charge.