On a lighter note, re "thoughts" - only speculation available:
"Chaps, flight below barometric zero - best way to hide from radars of possible? opponent. It was a NATO plane, training aerodrome approach beyond control zone of Russian radars. They went in regime of following the landscape, planned to jump out suddenly from under the hill and -bang! their controller loses consciousness from surprise.
- Sure, they got a hint from Yak, that controller in Smolensk is raging, won't let them to land, so they planned to tip-toe to him from under the hill, so that he won't send them away un-timely.
- The phrase from the record then - what if he gets wild/beserk - can it be it was about the controller?"
:o)))))