@bubbers
Isn't the checklist saying 5 degrees nose up and climb power until at a stabilized altitude which they were at at FL350 and use UAS and thrust charts to continue.
If only they would have identified UAS and started the procedure.
BEA speculates about, that PF might have thought, he was in an "overspeed situation".
Wasn't he trying to extend spoilers? Who would extend spoilers in any other situation than overspeed?