Just in case anyone reading this thread cannot remember what happened, here is an article covering why Carl was not prosecuted and many of you will remember a sheaf of papers being removed from the trial papers.
http://www.news24.com/Archives/City-Press/How-Carl-Pistorius-dodged-a-charge-20150429
Yes, I read that at the time. It's full of maybes and mights and other insinuations based on undisclosed sources. If it's true, at the very least, you have to wonder why the state were prepared to forego Carl's prosecution for the sake of keeping the lead detective off the stand! We have a prosecution here who were too scared to put the policeman in charge of the crime scene and initial investigation on the stand for fear of what he would say - to the extent of thinking it would 'sink their case'. What could that mean other than that the state had something to hide.
I have also wondered how it is that a computer savvy individual such as Carl would have used his own easily traceable computer to deliberately wipe data and carried his brother's phone with him if it was his intention to do something illegal.