Exactly how much of an 'attack' was this?
Due to my slow connection I couldn't view the video. I have read about what might be the same, or a similar, incident. If so the women were not killed. More 'threatened' and afraid than anything else.
Wolves are intelligent and curious. Might be the wolves were just sniffing around and playing. Being wild animals and predators they are rough and easily draw blood from us thin skinned humans.
IMHO if the pack had intended to seriously maim or kill they would have. The outcome largely defines the intent. The joggers get away because the wolves let them.
The joggers also showed a great deal of disrespect and a lack of caution running when they knew wolves were present. Instinct of both cats and dogs is to chase and nip at any running animal.
Confronted with wolves or large cats you face them and back off slowly. The worse thing you can do is turn and run.
IMHO anyone who can't observe simple common sense rules for sharing territory with wolves needs to stay out of their territory. Stay indoors, run on your treadmill and when you do go outside stay in your SUV.
I see no harm in carrying a can of bear spray. Heavy hands with a bite. But this shouldn't be seen as an alternative to common sense steps like staying away from known wolf areas when running and stopping and backing out slowly if you see them.
IMO firearms are overkill on anything less than a wolf that has clearly demonstrated hostile intent. Chasing and scaring runners too stupid to respect the wolves and act appropriately doesn't qualify.
If and when wolves clearly demonstrate hostility a shotgun would be my choice. I think your going to find a #2 and #4 buck shot to be optimal. Double ought, and especially triple ought, are way too large. Your going to have massive holes in your pattern and end up either missing or maiming the wolves.
Kill if you must to end a clear and immediate threat but kill cleanly. No need to be cruel.
An interesting site with useful information:
http://www.wildsentry.org/WolfAttack.htmlIt points out that the overall risk of wolf attack is quite low. I'm far more likely to slip in my tub and drown than to be harmed by a wolf.