Guys and gals, TSA likely had nothing to do with it. Erythropoietin is not an illegal drug; it keeps people with renal failure, post chemo patients, etc. alive. It is however, a banned substance for athletes competing in sports governed by WADA, IOC, and IAAF (USADA, USOC, and USATF adhere to the code of these international sport governing bodies).
In the United States, sports doping is not a criminal offense and USADA does not press criminal charges. The pro athletes we hear of in lawsuits or facing criminal charges (Marion Jones serving 6 months, for example) are being convicted or sued for lying under oath, fraud, etc. This is not a personal opinion as to the extent to which doping is a "crime"; it is merely a statement of the legal aspects of the scenario. USADA cannot "arrest" anyone or "take them away in cuffs". What they can do is sanction an athlete and remove their eligibility to compete (personal and moral fallout aside).
So it would be foolish and pointless for Trafeh to "run for it" (no pun intended) - USADA/WADA would just say okay, see ya later, you're banned for xxx years. I surmise that someone FINALLY had some solid, concrete evidence against Trafeh, or just finally had the balls to blow the whistle, and tipped USADA. Based on that evidence, USADA intercepted him on this little mission of his. I imagine Trafeh strolling through the airport terminal and someone approaches him and says, "Hello, Mr. Mo Trafeh? I'm ______ _______, a doping control officer with United States Anti Doping Agency. May we have a word"? To which Mr. Trafeh responds, "Oh, Fuh........" Game over.
No, I don't have insider info. I just read a lot of the actual reporting on these things all the way back to the FESTINA scandal (98 Tour de France). Yes, in my parents' basement. With my DIH.
All that aside, what amazes me that it was apparently SO well known on the pro and semi pro circuit that Mo was dirty, but none of these elites or 2nd tier elites (absolutely not an insult, I respect these guys more than the ones with the big contracts) came forward.
Okay, back to World of Warcraft.