That's a fascinating scenario! The only thing that seems off, as far as I can tell from reading up on the names mentioned, is that C.C.B. wasn't started until 1986.
I've done only the very slightest bit of research, and I'm wondering if parts of the scenario could hold some truth?
"The Rise and Fall of Apartheid Death Squads, 1969–93" - Keith Gottschalk
http://link.springer.com/chapter/10.1057/9780230108141_9