I just googled it, and it looks like Amazon bought the rights to the two books from a company that didn't have the rights to sell them in the first place. Amazon admitted that it was still wrong to delete the already sold books though.
"Right is right, even if no one is doing it; wrong is wrong, even if everyone is doing it." - St. Augustine
Who says back fat is a bad thing? Maybe on a hairy guy at the beach, but not on a crab.