Definitely not a home user, probably someone that works in the studio that filmed the movie and had uploaded a post production copy or final retail copy up on the net, they wouldn't just do it for a nobody sitting in front of a PC.
Think about it logically, how many local CD's and movies are put on the net shortly after their retail release in SA? Quite a few. Why now all of a sudden, and the movie is still a mystery? There are simply too many gaps to fill.
***EDIT
Just spoke to my brother he works at Ster-Kinekor, all Projectors are digital, they all come on hard drives sent via Head office, so a copy of a film is easily obtained with a HDD enclosure. I am thinking:
Kopi -> Pasta -> Convert -> Upload -> IP tracked and busted?
This is all pure speculation but to me it seems like the most logical explanation.