A graphic example of why it is a very bad idea to make up your own drills or actions. Thank goodness that all survived this, with only minor damage to their underwear.
This gang-bar reset thing sounds as if the Captain had done it before, but didn't think about the battery also going off and losing the standby instruments - I mean who would intentionally switch off ALL electrical sources in flight, unless the actual published QRH or published memory drill demanded it ?
Out of interest; what caused the windows to smash in this incidence ?