Cycling South Africa reports that Tyronne White has been found guilty of an anti-doping rule violation after an in-competition test conducted on 30 April 2016 confirmed the presence of the Glucocorticoid, Dexamethasone.
The SAIDS Independent Doping Hearing Panel imposed a period of ineligibility of 18 months, commencing on 14 December 2016. Mr. White is therefore suspended and prohibited from competing and administering in the sport of Cycling as well as in any other sport in South Africa and Internationally from 14 December 2016 until 13 June 2018. This decision may be appealed by Mr. White, the UCI, WADA and SAIDS.
Cycling South Africa respects the independence of the SAIDS process and will respect the outcome. Cycling SA further reiterates its zero-tolerance approach to doping in sport and will continue working with SAIDS in the promotion of a drug-free sport via its awareness and extensive testing programmes.

To me that sounds like the Guptas only wanting their bank accounts back but are not prepared to seek the court's assistance and for the same reason; they don't want their version subjected to scrutiny and cross examination.
If a professional's negligence cost me 18 months of a short sportsman's career and my good reputation for ever, I can see only one reason NOT to seek redress and that is because I don't want my story ridiculed in the open.