The thing is there were so many factions in the TCW. Sulliban The Xindi Sphere Builders Tholians Vosk and his faction. I keep thinking that maybe there were others involved that were never mentioned in the show. For instance which faction had that ship that was bigger on the inside in the episode "Future Tense," that even the Tholians got involved trying to recover the ship. It seemed like everybody knew about it and what it was for except for the people on Enterprise. But yes the Xindi testing that weapon on Earth is kind of messed up because it gave them a big red flare to go looking for them.