Youtube has the following landslide simulation, which is quite interesting:

http://www.youtube.com/watch?v=VV9OVapVC9s

I suspect that the flow rate might be rather high for a slope of that gradient, and the dynamics at the front of the slide look a little odd (I wonder of the modellers have based this on a pyroclastic flow type process?).  I do like the way that the failure initiates at the slope toe and then retrogresses, and the way that the flow rates in the centre of the slide are higher than on the margins at the end of the event