Final 3 Greens 76 knots to 55 in an instant - no. In the time it takes you to recognise identify and accept the engine failure AND pitch to a gliding attitude ABSOLUTELY. (and you want about 73 for best glide anyway, assuming MTOW..)
I can't think of a good way to prove it, but whenever you do these things as exercises you're cognitively primed for something to happen - and a specific something at that. You react quickly because you're pre-programmed (and skipping identification of the issue). I'm quite sure that it's possible to go from 76knot climb to a glide without stalling, but don't underestimate the 'oh **** is this really happening' factor. A split second may be all it needs.
And yes, gliders are somewhat different beasts in many ways, but they still fly by the same aerodynamics.
gpn01.. that they might..