Doping case linked with Larry Olubamiwo

The boxer Larry “War Machine” Olubamiwo took certain anabolic steroids, HGH, IGF-1 and other doping drugs during six years. However certain tests have been conducted earlier, he was caught just in January 2012. After a fight against Sam Sexton Larry Olubamiwo tested positive for forbidden medications. Metabolites of steroids were not found in his sample. The boxer tested positive for EPO. EPO represents a blood boosting medicine.
Prolonged usage of forbidden medications by Olubamiwo was a real embarrassment for the United Kingdom Anti-Doping. Andy Parkinson, the CEO of the UKAD, tried to prove that the suspension of Olubamiwo for administration of 13 various banned drugs is a real success of the UKAD in the struggle against doping.  
Andy Parkinson noted that it was an unusual case. The boxer applied steroids and other related preparations for prolonged time without fear to destroy his health, career and reputation. He was sentenced to 4-year suspension.
But the alarming fact is following: Olumamiwo could avoid detection for long time, despites essential efforts of anti-doping officers to “clean” sports from intake of doping medications.
Olubamiwo was caught just because the UKAD was informed by the United States Drug Enforcement Administration (DEA) that he became the target of an investigation related to illegal sale of anabolic steroids and other related drugs in the US. Then the UKAD conducted a test that resulted in positives for EPO.
Robert Smith, the General Secretary for the British Boxing Board of Control, supported the affirmations of Andy Parkinson about efforts and success of anti-doping officers. He noticed that the case demonstrated that cheating couldn’t be hidden.
What do you think about the case? Do positives for EPO and the suspension of Olubamiwo display that anti-doping officers work successfully? Or does the case manifest that anti-doping policy is not proper?
Anyone can make own conclusion. But it is clear that the sportsman could apply numerous forbidden medications for 6 years without being caught by anti-doping officers.