There are wolves in the Urals, but no animal tracks were found in the vicinity. However, wolf howls are well known for travelling great distances (e.g.several km) If howling in unison it can sound like there are more than there really are - (Maskerovka!)
The camp was located at a mountain pass - this can act like a wind tunnel carrying sound FURTHER DOWNWIND- so any wolves on the prowl at night looking for food can be a quite a way away (hence no tracks) and yet sound frighteningly close and in numbers without actually being that close or even knowing there are humans there because the wolves are UPWIND and cannot smell the CAMP. Personally, if I was woken up at 2am by the sound of wolves seemingly near my tent and I had no weapons of note to hand, flight would be an impulse which would seem to be a common sense thing to do!!!
It is very interesting theory. I am congratulate you, you have told very interesting and real theory. It is much better, than about what speak much: the Yeti, gangsters, and other animals.
However here not all so is well clear, as is direct on place if it is good know those conditions.
I can object the following:
1.Wolves do not leave wood zone, especially it operates in bad weather ( wind, blizzard, and very low temperature.
2.In their such conditions howl cannot be heard so far. The wind blew from the West towards the East. From the nearest perennials (there they still can leave) from West side to tent approximately 2,5…3 km (or 1,5 … 2 miles). Thus perennials from the West are at height about 600 m (metrs) н. at. m. Tent has been established at height of 900 m (or ~ 2750 ft). And in an interval there is mountain (ridge) in height bit more than 1000 m (more than 3000 ft).
3.Howl wolves in conditions which are calculated on that time it would be very strongly masked we howl wind of different force and tone of sounds. As though they could distinguish one sound from another? They did not have on the screen of the computer an inscription: “It is wolves howl on small distance”.
4.It is necessary estimate correctly measure of danger and correlate it to actions. For example, if you fly by the plane at the big height and to you began be heard, what the engine operate incorrectly, you would not began jump out at once from the plane?
But if estimate your original thinking and very plausible theory you have very well thought up.