I think that Ross Tucker is a perfect choice, well respected with a true understanding of what is feasible and willing to research and present findings clearly to the masses. As others have said he has been critical of Semenya and Pistorious and their attempts to claim they don't have advantages.
I have no idea who the other person is, but even if he is an idiot who claim Rob Young is legit I would expect Tucker would walk away and shout from the rooftops that a cover up is going on.
The next step is to ensure that it isn't just Young who pays the price. We know the motives of his ghost writer, but why would a SKINS employee be involved in this charade? Were SKINS paying a bonus to their employee if the record went down, to help motivate him? If so we need a guarantee from the CEO that they will not do this again, and also an insistence that as their employee was involved in deception that he should lose his position.
Do we know if Dustin and Rob knew the SKINS employee beforehand?
If he didn't, I don't understand why he participated in this scam.