I've heard and read from more than one source that Speaker for the Dead is an allegory of Hitler and his crimes against humanity and the Mormon doctrine that claims even sins so great as those are, in theory, forgivable. The rumor all strongly insinuates that Orson Scott Card may not even have written either Ender's Game, Speaker for the Dead, or both.
Is there any real evidence for such a claim? I want to avoid speculation, but if anyone knows of any inconsistencies in the works in question or interviews that OSC has given on the subject that might corroborate such an extraordinary theory I'd like to hear about it. I don't consider further rumors or hearsay to be acceptable answers.
Having received advice from other users, I will include a link to an article that gives some weight to the theory: Kuro5hin, 2005
This link refers to several other works that say similar things. However, there is another source out there floating around that I can't seem to link to. Sorry about that.
Please note that this link is incendiary and I don't offer it to solicit flamebaiting or trolling. At least one well-known science fiction author shows up in the thread to argue with the original submitter, and it gets rather nasty.