I find the whole incident strange...
for one, even the most naive wolf realizes humans are a top predator, and wolves rarely go after other meat eaters unless starving.
for two, wolves rarely interact with humans because we generally travel in larger though dispersed packs ie. multiple duck hunters around a pond.
and for three wolves are highly intelligent and wary and rarely put themselves in a position where they can get killed or seriously injured, weakening the pack.
that 6-7, which by all indications is a large pack, would stalk dangerous, armed, humans once they caught their scent is bizarre, as is their confronting humans- wolves are stealth hunters, only breaking into a run once the prey starts to run themselves, equally bizarre is the wolf dragging off it's dead packmate, which is a huge waste of energy and serves no obvious purpose for the pack.
I strongly suspect that either those animals are actually dog/ wolf crosses, whose historical familiarity with people has bred the fear out of them, or they're habituated and have been taught not to fear other predators- us
There's also the reliability of the witnesses- after all they ARE hunters who may actually hope for a season on wolves and may, consciously, or unconsciously, have a built in bias that affects their memory and actions.
While not a biologist, I've spent years hunting, fishing, and living in some of the most wolf dense areas outside of Alaska or Siberia- northern Ontario, Alberta, and Quebec, and In the last 50-60 years have seen exactly 2 wild wolves, both of whom turned and went the other way, but I've seen dozens, if not hundreds, of fresh tracks, and at least a dozen fresh kill sites (still largely intact and not starting to spoil) where they've actually moved on when I arrived, and returned after I passed.
Even when dogs are around their normal MO is to draw off the dog away from their human, then kill, or sometimes breed with, it out of sight or sound of their master.
