Had a look at the site earlier today.
Appears to be an RV4 of Hamilton origin, but for some reason was being re-assembled at Moorabbin some two weeks ago in a hangar. I have no idea why.
6.7 miles on the 337 GPS radial out of Tooradin, so at the lower end of the Moorabbin aero's box.
Witnesses suggest a spiral dive as per the newspaper reports with components falling off. Looks like the elevator is on the ground near the line of trees near the SES truck. No matter what it is, pieces falling off your aircraft would have been terrifying to say the least.
