Naiveté or sheer stupidity
When Jones announced her intention to move to Francis the IAAF quickly got into the act and so, too, did some sponsors. The end result was that the athletics world wanted to at least appear to be moralistic. Francis was a disgraced coach as far as they were concerned and anyone who was at the top of his/her game and openly gravitated in his direction would feel the weight of their sanctions. So it was that the talk ended and neither Jones nor Montgomery moved towards Francis.
Suddenly the athletics world appeared to have been shocked into reality when someone dropped off a loaded syringe at the United Stated Anti Doping Agency (USADA). It took a few weeks before the laboratory could detect the combination of substances it contained. It also appears that its contents were being used by athletes associated with BALCO.
An article in June of 2004 revealed:
Tim Montgomery, the world’s fastest man, told a federal grand jury he used human growth hormone and a steroid like "magic potion" provided by the alleged ringleader of the BALCO steroids scandal, The Chronicle has learned. The admission contradicts his recent public denials.
Montgomery, who shattered one of track and field’s most cherished marks in 2002 when he ran 100 meters in 9.78 seconds, admitted to the grand jury that Victor Conte gave him weekly doses of growth hormone and a steroid-like drug known as "the clear" over an eight-month span ending the summer of 2001.
He told the grand jury that Conte assured him "the clear" was not an illegal steroid, but he acknowledged that he knew growth hormone was on the list of banned substances for track and field.
Rather interestingly the authors of the article referred to here noted that the plan to capture the 100m world record was hatched at BALCO. They noted:
Conte called it Project World Record, Montgomery said, and brought in Canadian track coach Charlie Francis and bodybuilder/trainer Milos Sarcev to join him, Graham and Montgomery.