I Believe Nelson Mandela Had Already Died

In prison to be more exact, because in Mr. Mandela's younger year he was a towering six foot, four inches. When he died he measured about five foot, nine inches. People shrink with age
TWO inches at most, he shrunk about five...
And do I need to mention the also in his younger years he had a very pronounced, triangular "widow's peak" and in recent image he BARELY had a widow's peak, and it was very flattened, more squarish, it could be easily missed in fact.
I believe due to the nature of his cause and being a major political figure for unsegregating South Africa he was possibly killed by the guards, by the racist inmates or even from old age. Him going to prison caused an uproar, so surely his death might even cause a rebellion against the government.
So I believe they got a "rough draft" body double for him, living in luxury for the rest of his life. Surely he would not com forward and risk his privileges of pretending to be such an influential figure in the world. And if he didn't behave like Nelson, the family could even be fooled by such excuses as "he might just have changed in prison" leaving the world fooled...