Is it possible to warp the aluminum frame of an iPad by frequently holding it the same way?

I have an iPad that I baby. It is in a heavy-duty case and has never, ever been dropped or harmed in any way.

Last night I had trouble plugging in the charger- it was oddly tight. On investigation the aluminum is actually warped down around it by about 1/16th of an inch.

I am completely blown away at this and cannot figure out how it could have happened.

Oddly enough I hold the device with my thumb on the case right at that very point. Could this have caused the damage?