He didnt do anything that was previously held illegal.

Blizzard has stated Instance boosting is "not working as intended".

Are people who instance boost "asshats" or "takeing advantage of game mechanics", he should not be banned for doing actions that are within the rules even if they work "unfairly" to his advantage.

So at the most he should lose the grear and honor he got from WG, at the VERY most.

Then Blizzard should simply declare that you cannot similtounsly play horde and allience accounts in WG or maybe at any time. Once they make it illegal, then ban violators, but not before its clearly a violation of the rules.

As to the multiple accounts in different names ... exactly why would you create an account in a name not yours?