It looks to me as if the OP may have confused transonic lift degredation ('shock stall' - aren't they all?
) with the 'normal' understanding of 'high speed stall'?
Trying to keep things incredibly simple, without recourse to any equations, the 'traditional' 'high speed stall' is when a wing is taken to or past its stalling angle at a speed above the straight and level stalling speed. Normally this will occur when manouevring. It is (or was) - and should be - included as an exercise in all basic flying tuition. Such a 'stall' is easily recovered by reducing the angle of the wing to below that stalling angle, normally by relaxing the tailplane/elevator input that has caused the angle change.