In the Aerospatiale, er- Eurocopter, no- Airbus helicopters without a twist grip engine control, collective down is your only option. It's a tough decision that has to be made quickly in a demanding situation, especially if you don't have an expansive area to land. It will land hard, you can't grease this one on, and accurate placement of the skids is more hand grenade than pistol, pretty much the exact opposite of every flight maneuver one has initiated.
If anti-torque control was the issue and rotation nose left/pedals unresponsive make it sound so, at least this one stayed on the roof, everybody survived and no bystanders were involved.