imperial angel - On the subject of "Many Deaths of Nicholas II", I do want to add something else. If her book is about an analysis of the narratives that followed the execution of the Tsar, we can apply the same here, because as I mentioned earlier the question that is the topic of this thread has a peculiar and revealing quality.
When we ask the question: "orders from Moscow or Ekaterinburg?" notice we personify Moscow, but not Ekaterinburg. "Moscow" means "Lenin" (not "Sverdlov"), while "Ekaterinburg" does not mean "Goloshchekin" or "Beleborodov". Why? Odd really, because in terms of this particular question, we know more about the involvement of the three latter actors than the single former. Ekaterinburg is sort of an ambiguous "other" alternative (it shouldn't be), while Moscow seems to come back to Lenin's direct hand (it shouldn't either). We never say, for instance, that the orders came from Moscow but that Sverdlov made all the decisions on his own, and we never say Goloshchekin went on a drinking bout and took matters into his own hands, no! - it is either Ekaterinburg, Lenin, or bust.
Again, why? Well, the personified nature of the question should tip our hand as far as the tacit psychological elements at work: this is ultimately a loaded question - it serves some narrative function for us - and that is precisely why we come back to it time and time again. We are really asking, "Did Lenin make the order?" and in seeking an answer Ekaterinburg is the most distancing answer we can come up with, while Lenin is the most direct. This is the inherent bias of the question itself, and one, as scholars in search of truth, we must be wary of. In examining the evidence as objectively as possible, we must therefore frame the question as "Ekaterinburg or Moscow" and ideally avoid personification (something I have utterly neglected, and therefore as a guilty party feel comfortable bringing up).
Really, based on the available evidence, if you were forced to personify the two locations, one would be named "Goloshchekin" and the other "Sverdlov". The answer, when framed as such, may provide less gratification but more truth.