Why do they have to treat him as trying to obscure anything?Perhaps my point was not clear. You are assuming Willie was not obscuring PED use by tampering with his sample. ASADA are not going to make that assumption. They will treat him as if he was attempting to obscure PED use.
I don't believe he was obscuring PED use but acknowledge that is my own value judgement. The system is going to have to treat him as if he were obscuring PED use or the whole WADA framework is undermined. More information might come out through the process which changes or influences how things should be examined but that remains to be seen.
Can't he just get done for tampering regardless?