I definitely see a movie or tv series here, not to mention a Delta Green or other modern RPG scenario. "Based on a true story" indeed.
This research team is surrounded by some of the harshest conditions on earth, where temperatures can plummet to minus 23 degrees and wind speeds can reach 135 miles per hour.
-23, whether C or F, is pretty cold. According to the National Weather Service wind chill chart, a 50 mph wind brings -25F to -60F (it doesn't go to 135). That will kill you more quickly than -23.
This isolated team is made up of experts in engineering, meteorology, and medicine.
9 against 1 sounds doable, but it's likely that none of them are trained in coordinated violent action, so the perpetrator gets a slight advantage for rage and probably strength.
The medical experts, though: they could probably drug him (maybe via his food or drink) with sedatives from the medical supplies. Then use a hand cart to move him outside, where he can remain until spring. Maybe give him a good soaking with water to preserve him properly for the autopsy.
He added South African authorities have reached out to authorities in Norway and Germany, who have bases closest to Sanae IV, "in the event that we need to do an urgent intervention".
Now it's a miniatures game scenario, too!
I hope they all get out of this without further harm, but I am not optimistic. (And I hope that those of you who run games based on it achieve total party kills!)