Interesting to research this event using the "basic" tools available on the internet to a general observer.
Utilizing both flightaware and webtrak data, it seems that the descent, which is commenced after passing overhead SHEEDS continued down quite a bit quicker and lower than is normal. Flightaware and webtrak both show the aircraft descending from approx 2500ft at SHEEDS to between 700 and 900ft before the aircraft even starts its right turn onto finals for runway 34.
Again, this is only using flightaware and webtrak so their reliability isn't guaranteed but watching the same approach from subsequent aircraft, most dont venture below ~1400ft before the turn to final on runway 34.
Just a few observations. Perhaps a few of the guys who shoot this approach regularly in real life can explain the approach a bit more specifically.
A few links:
Flightaware data
Flight Track Log ? VOZ24 ? 13-Aug-2013 ? KLAX - YMML / MEL ? FlightAware
Webtrak
WebTrak: Melbourne International Airport
(you need to change the date on the left side to Augut 15th at approx 8am to view the flight in question)