Hi Glenn,
With the actual information that I have, I follow the same direction.
It might be that the group's plan on January 31, 1959, was to end the day inside the forest. If so, they would have headed directly north through the Auspiya valley rather than moving toward the 1,079-meter slope. This seems consistent with Dyatlov's diary entry, where he describes reaching the tree line and then descending south back into the Auspiya valley to spend the night.
However, it appears that they changed their strategy on February 1, 1959.
By that point they had effectively lost a day of progress. More importantly, they changed their logistical planning. On January 31 they chose to return to the forest without establishing a cache. On February 1 they created a supply cache before continuing. This was the opposite of what they had done the day before.
The decision was economically rational and solved several problems at once. First, it reduced the weight of their packs, making the ascent much easier and addressing difficulties that had become obvious on January 31.
Second, it opened a new strategic option: travelling above the tree line toward Otorten with less effort and potentially saving time.
If this interpretation is correct, then the route on February 1 was not simply a continuation of the previous day's track. The group would have been consciously implementing a different plan. Instead of following the track they had made on January 31, they would have created a new route adapted to their revised strategy.
In that sense, every member of the group would have been aware that they were doing something different from the day before, because of leaving there foot step path from yesterday.