I disagree with that definition. 'Grey zoning' is taking substances which are not prohibited, yet may provide a competitive advantage. The substances tend to be difficult to obtain which is why people have problems with it morally - for example everyone can get their hands on an iron supplement but not everyone has a doctor willing to prescribe them a thyroid medication NOP-style.
Taking undetectable doses of forbidden drugs isn't 'grey zoning', it's just intelligent cheating. Where various pro groups lie on that spectrum is a different question...
They'll both be in Budapest, I'm sure Klecker doesn't care, given he made the team. Sure, getting outkicked by the same guy is frustrating, but did Klecker lead most of the race? No. Woody doesn't "owe" him anything. He's elated to make another world team and get the chance to compete against the world's best. Believe it or not, you have to be mentally tough to be an olympian/US champ. Getting his feelings hurt and "hating" Woody simply isn't the Klecker mentality.