Lonewolf50 - apparently the cause was an incorrectly torqued anti-flail mount on the TR drive shaft that came loose, slid down to the next TR bearing mount and jammed against it then gradually sliced its way through the TR driveshaft itself.
Rans6andrew - as Tourist says, an EOL in a 1 to 2 tonne helicopter (probably 1500 to 1800 ft per min RoD) is pretty straightforward with room for error - they are designed that way as they are single engine - there is enough energy in the rotor system to arrest the RoD and forward speed and still allow for cushioning the touchdown. Very few will train in their light singles at MAUM as it starts to make things trickier.
Now increase the mass to 10, 15 or 20 tonnes and the EOL (probably 2000 - 2500 ft per min RoD) would be a much dodgier bet, even in an Apache with undercarriage and stroking seats designed to absorb over 25 G of vertical impact. The margin for error would be very small and a powered running landing to a decent surface starts to look the more survivable option.
For those practicing some of these 'theoretical' techniques such as the zero speed landing - have you empirically assessed your practice pedal position as truly being representative of zero TR thrust? And do you really take the EOL to the ground with that fixed pedal position without cheating?