Nothing cures failure like success, and after a solid week of failed drug tests dominating the news about track and field, athletes got back to the track to do what they do best – compete. Well enough that, at least for me, thoughts ran back to Moscow and the upcoming World Championships. What better way to get things "back on track" than with a pair of world leading 4×1’s as the US screamed 41.75 and 37.59 with a 41.78 thrown in for good measure by the women’s "B" team! The men’s squad set their mark without Tyson Gay, almost as if to say to everyone that things would be just…