Yes, I remember that one. My character refused to work with that guild, because it was obvious there was a spy in the organization. I had no idea who it was. It would have required going through the family histories of all the people in a large, multi-realm guild, most of whom my character didn't know, and had never interacted with. You could probably come with all kinds of reasons that just about anyone would want Fontan or Perdan to fail. Singling out the real culprit after the fact is just a case of 20/20 hindsight.
Yes you are probably right. That's why I voted that spying is always bad for me :p