As with any "revolution", during the overthrow of the old regime everybody is united in hating the Old Boss and they co-operate. They all think that their particular ideologies and special interests will become dominant after the revolution because of course they will - everyone thinks that their own personal beliefs will be the status quo after the revolution, because everyone thinks their beliefs are "correct" and will naturally assume dominance once oppression is lifted due to their inherent superiority and logical correctness. (This goes double for Marxists because they believe that Communism is the natural final state of man, and Neo-Liberals who believe the same thing about Capitalist Democracy).
Yet when the hated autocrat falls, every faction and interest group makes a power grab and they discover that they hate each other just as much as they hated the old regime, and those BASTARDS won't just agree that their ideology is wrong and let them run the place as is their destiny. So they will have to be eliminated. All that united them was a common enemy, and without it, and without anyone clearly in charge, the result is almost always civil war and chaos. And in the meantime the people actually running the place were all those appointed by the old regime because they're the only ones who can operate the infrastructure.
SA will become a failed state like Libya, Iraq, Somalia, Egypt, or anywhere else where a dictator was toppled without a clear successor. It will be a time of chaos, backstabbing and angry screaming, and it will be GLORIOUS.