Unfortunately it's not just our sport but this hits home because it's our ox that is being gored. The problem IMHO is the mindset and atmosphere of permissibility that often occur at the high level of sports in general. In essence, as long as you are winning we will be willing to look the otrher way. That is why every time that there is one of these stories, regardless of the sport, we usually get the reaction of "why didn't somebody say something earlier"? Well they were bringing home the hardware. And at the end of the day, that is what matters to them. They want to eat the eat the sausage...just don't tell them how it's made.
In this sport we expect a higher level of conscience and self control because it is based on a martial art. But the reality is if you are involved in sport TKD, understand that it is a sport and at the high level are subjected to the same pitfalls as any other. Tenants and tradition are replaced by winners and loosers. I wish this was not the case but it is what it is.
Sadly not too surprising. The stakes are high enough for both athletes and coaches that there will always be people who decide the ends justify doing 'whatever it takes.' Many dysfunctional situations don't get public until they fall apart...keeps tabloid journalists employed.
I would humbly submit that sometimes, people are so close and so personally involved in our martial art that they forget the fact that is takes a special type to be an athlete at that level. More often than not, that type is absolutely nuts.