I grew up breeding Chows, so I seriously have to tell you that Ripple has it right here.
I would guess by yours posts, darknight, that you never had to actually be the one handling a pack? Sounds to me like the wolves you dealt with were being controlled by their Pack Leader, your friend. If he weren't there...
Seriously, Wolves are genetically aggressive. This does not mean that they are mean. Just as Chows are not mean. But it does mean that if they ever sense weakness in you, they are going to try to make use of that weakness to become the Alpha.
This does not seem to be the case with your Innuit dogs (a breed I am unfamiliar with), which led to my question about how they bred the wolf's innate aggressiveness out of them while keeping the majority of the rest of the wolf's traits. It's not something they've been too successful with even with Malamutes (not the ones that are still within shouting distance of wolves, anyway; a lot of them have had the wolf bred completely out).
Then again, even the most aggressive pack animal can be starkly different if isolated among another species.
As has been noted by even people who know nothing about animals: the behaviour of a single animal, or even a pair (mated or otherwise) is surprisingly, and often dangerously, different from the behaviour of a pack of even the most docile creatures.
Which is why, even though I have only 2 dogs right now, and they are Keeshonden, a far cry from my agrressive, stand-offish, territorial, easily affronted Chows, I have spent a great deal of time and effort establishing myself as Leader of the Pack. Especially since I intend to get more dogs and will brook no challenges.