The emergency exits in the SSJ-100 SVO incident were woefully inadequate as they are on most narrow body aircraft. The aviation incident was completely survivable.
We will learn how much g the passengers in the back experienced, and how likely many of them were not able to move any more, and therefore unable to evacuate even in 90 seconds..
If you look at the video, people come out at an absolutely low rate, much lower than you would expect. If they would come out one every second (which is what you can see on many other occasions), they would have easily evacuated the full load of people.
With respect to the bounce, would the aircraft have auto-spoilers in (what they called) "direct mode" ?
If you are used to auto spoilers, how much would it increase the chance of a bounce if they would not deploy as you are expecting ?