The biggest issue that I see here is the passengers. If they had called the police 'several' times and nobody had arrived at the aircraft, what was to stop any of the passengers simply walking off the aircraft?
From what we see in the video, the door was open. Can we assume the air stairs were down? If so, what stopped passengers forcing their way off the aircraft. There may not have been any access into the terminal but one would assume that police would turn up fairly sharpish if there was members of the public walking around the ramp unescorted?
Also, was there not one single member of swissport or ryanair that had airside ID to access the terminal?