Does anyone really need to know for sure? Good for a chuckle though when you hear commentators talk about stripping east german athletes of records for their 'obvious' doping. She never failed a doping test (her retirement was... unusual though) but then neither, technically, did Lance Armstrong.
And on the leaks themselves, it's always heart warming and inspiring how many top athletes overcome the odds of having severe asthma, ADHD and the like to achieve greatness in their chosen field.
I hope it was just down to FloJo being a mutant. Something cool about her being the outlier in the records. I think they have retested her samples even after her death but who knows.
It is nice to see asthmatics do well in sports. Nasty ailment in severe cases.