SA is a scary place to live. People live in a heightened state of fear even in their own homes. Especially in their own homes. My SiL is from SA and DD was shocked when she visited at the bars on the windows and doors effectively turning their bedroom into a cell. Family and friends have told us horror stories. Sadly,criminals have little to lose and can be desperately dangerous.
However, one aspect of the Pistorious case that was never considered was his use of steroids. 'Roid rage' is well known to lead to rapid mood change and activity. Pistorious was known to be taking them. The environment he was in, his level of disability plus these nasty substances easily account for his precipitate behaviour on that awful night.
Poor boy. Let him out. His life as he knew it has gone.