I see a mystical analogy in this situation:
There is a Russian fairy tale where Ivan stops in front of a stone on which is written:
If you go to the left, you will lose your horse/deer!
If you go to the right (that is, to the pass) – you will lose your life!
You will go straight – you will live, but you will forget yourself! We see the same thing here.
I will explain the last analogy in more detail.
If you go to the left, you will lose your horse/deer! (Karelin/Atmanaki's group did not take the train in Serov)
If you go to the right (that is, to the pass) – you will lose your life! (Igor Dyatlov group died)
You will go straight – you will live, but you will forget yourself! (Igor Fomenko forgot the route)
As for those who went straight (does not remember anything) and ended up in the USA, there are interesting memories of Maya Piskaryova on samlib.ru:
Oh, those elusive Rostovites! For a long time they did not give in to the search, as in that winter of 1959. First, documentary film director Eduard Anishchenko, himself a Rostov resident, turned to one of the tourist clubs in Rostov-on-Don during the filming of the film «Unfinished Route», and, as it turned out, successfully! He contacted one of the friends of the leader of a group of Rostov students from the Rostov Pedagogical Institute.
In general, this friend intrigued us completely. But the friend also named the head of the Rostov group and said that he now lives in the USA. And this is already half the battle. They began to look for Fomenko in the United States, but then there was a scandal with Snowden, and the Americans closed their rescuers.
Alina, the administrator of the secret.li forum, joined the search and found a mention of the name Fomenko on the website of Tver State University. A letter was sent to the university, they kindly answered me. And it became clear that this is the very Fomenko we are looking for. On behalf of all the researchers of the tragedy, I express my gratitude to Yuri Domansky from the Department of Literary Theory, who responded and told me the address of Igor Vladimirovich Fomenko. Now the letter has gone to America, and we hold our breath in anticipation.
[–] Where we planned to go to the ridge, I don’t remember. / I don’t remember his last name / I don’t remember exactly where we landed / I don’t remember the settlements. / Thank you. But I don't remember. I won't fantasize. / I don’t remember at all how and where they left the village.
[–] Please remember if you were going to go to OTORTEN?
[–] I don't remember anything about Otorten. And I can't remember the words either.