no, so basically what you have is that they found a diuretic in his A sample.
The substance in itself is NOT in any shape or form PED or evidence he took it.
We will have to wait for them to try and find out what he took, if they are tainted or not and most important, if the B test also shows the same results (which is possible could have been contaminated).
So in other words, you have no clue what happened.
Stop jumping into conclusions and let the "authorities" deal with it before judging a guy whom, until now, passed all tests with flying colors.