I just tried mine, and they do come out!
Trouble is, I did it to the Bonus Material one at the same time I had the cover for the Empire Strikes Back one out, and now I have them mixed up I think.
I'm gonna stick them on EBay now, cause they aren't genuine now. And then I'm gonna call my lawyer.
What kinda clowns sell boxes that let you do that? Those bastards.