Lore wise it makes sense. The Fallen wanted a Warmind since Taken King and the Fallen S.A.B.E.R. strike. Getting an old abandoned Warmind on Mars would be a dream come true for them. Alternatively, if the speculations are true and Rasputin DID conspire against and even damage the traveller, this could be Rasputin himself. Now that the Traveller is awake and Rasputin reactivated he might be taking precautions. If Rasputin doesn't trust the traveller then certainly not the guardians either. He might be working together with the fallen as a backup plan, to build an army to take on the last city, the traveller and the pyramid ships. But as of right now, the most likely course of action should be: Nothing is true until proven. Same goes for these "leaks".