Look at the visuals (Score 1)

It is marvelously self contained. If there were some deviance we would have seen quite a different outcome at least initally. Mind you the negative outcome was theoretical - however we're still here. BTW such a small rift or anomaly in our space (local) would likely have done nothing more than inconvenience us. As our globe turns the rift would not turn with it but stay stationary.. (it has no mass and can not respect our laws of physics) and so at the speed of that rotation it would be beyond its birthplace. Take a deep breath. (at least its a good thought)