Comments re thrust on ET302 seem to suggest that from an arm chair the crew can be criticised for keeping it at high thrust.
The BAC FCTM states to attempt to match the out of trim speed in order to reduce load on the trim system. The aircraft is trimmed to an extremely high warp factor (aoa) and the inability to trim a correction arises due to the attendant forces applied by the off trim of the stab, and the corrective elevator input.
Reducing power as suggested does not achieve the matching of speed necessary to unload the stab, yet the comments suggest that the crew erred by keeping power on.... really? The fastest way to restore control, with the least altitude loss comes in this case by having high thrust applied.
Now, in the first instance of a problem with trim, keeping speed in check sounds like a nice principle, but that presumes that the trim has not run away fully, in which case, the control problem is exacerbated by the speed error between current and trimmed speed (aoa).
These guys had a substantial problem to fix in a time critical event, and the comments critical of their technique show the general malaise and lack of knowledge that exists in this industry. Hard to call it a profession. If criticising their actions at least get the physics right.
The crew did not “keep” the thrust high. They ignored a control available to them and ignored its effects upon the aircraft. There was no cognitive thought process that said let’s go past Vmo because that will be better for us.