While this is a possibility and I've seen these videos you're speaking of and also read other articles relating to rasputins alleged "attack" on the traveler, there isn't a solid answer yet. The fact that bungie is allowing game informer inside access to their studio I doubt they would let them publish such misinformation, we have to conclude that this is a nod to the fact that rasputin did NOT attack the traveler even though he DID have a plan to prevent travel from fleeing IF it attempted to. There are a few grimoire cards that mention this prevention but there isn't solid text saying Rasputin actually HAD to attack.