The LetsRun thread on this is pretty great, starting with a heated debate about his shoes. Were they too springy?
This comes on the heels of US anti doping handing a 4 year ban to the coach of Nike's elite running team. People who follow that side of the sport have little faith that athletics (or cycling, or any other sport) is any cleaner now than in past decades, which is to say, every successful endurance athlete is on some kind of gear.