As much as I want to say 100% that no player in the SA took steroids I just don't think anyone can be sure.It is not my place to name people that I know who may or may not be doping. To deny the doping issue in SA is the as same denying Neil Francis his opinion.
All Springboks who participated in the Rugby World Cup were tested.
I spend a bit of time on the letsrun forum and often you learn how these guys are cheating the system by micro dosing you take a dose that will give you all the benefits of steroids but is out of your system in 4-8 hours. One guy who got caught eventually said he got drug tested once a day for 3 days and he actively took steroids every day without being busted.
About 80% of people on those forums believe anyone getting WR times are doping and they say Kipchoge/Bolt/Flojo etc etc are all dopers but because they are money to IAAF people turn a blind eye. Not sure how true it is though.
I will say this if our guys are doping then every proper team in Rugby is also doping to compete.
I am also pretty sure piere spies was doping when he "got injured", came back half the size a few months later in 2006/7 and because he was so good someone sa rugby or the bulls covered it up. This is just my opinion I have no proof to back it up.