To quote Minea.
"Using another guild composed of alternate characters to farm GvG points for the vanarch election is not an acceptable way to become a vanarch and we take this matter seriously. We are investigating this issue and will take appropriate action."
To add further clarify, we are going to continue to iterate on the GvG system and plug holes where needed. I have seen many good ideas of how to 'fix it' but none are bullet proof. In the meantime we are going to take action and reset points to 0 if you are kill trading with alts.