User blog comment:Omega natsu2/Fairy Tail Episode 204: Stake My Life on Hospitality, Review./@comment-5036235-20141019140059/@comment-7418318-20141019151110

Since it's only the Zodiacs who go haywire and not the Silver Spirits (as far as we know so far) I strongly suspect that only those that came into direct contact with the gate (i.e. only the Zodiacs themselves, who closed it) were changed.

But even if that isn't the case, I hope the Spirit King won't join the fighting in this arc.