Doors including emergency exits are locked by the aircraft's systems when airborne. It's possible, though unlikely, the guy in the article made it through the

Doors including emergency exits are locked by the aircraft's systems when airborne. It's possible, though unlikely, the guy in the article made it through the middle plexiglass layer in addition to the inner layer which is only there to stop you from scratching the plexiglass; at 4mm thick it's certainly within the realm of human strength. However at 12mm the outer layer is comfortably beyond what a human could crack without weapons/tools.