The theory about a tree causing the injuries can be thrown out of the window I think.
From what I have seen there is'nt any tree around at this elevation. Probably looking at 1klm from the top before any scrub like trees are found.
I think you might have miss understood teddy's book and explanation.
Teddy proposes that the hickers followed their original route . They did not pitch their tent on the slope where it was later found.That is ,they went over the pass which is to the east of boot rock. They got to the ceder with skis and their tent and this is where they pitched the tent . The tent is designed to be hung between two trees .
Where the two Yuri's were found, next to the ceder there is another large ceder that had fallen. From checking the growth rings, teddy found that the tree fell in 1958-59 but did not have a full growth ring for 1959 . Plus the tree can be seen on the ground in the 1959 search photos in late February.
Coincidence,perhaps..... but there is more to it and it will take a bit of reading to understand which is worth the investment.