I don't buy it. Maybe it was some genetic freak like Andrew the Giant of a Neanderthal, but this is only going to fuel the stupid conspiracy theorists that giants once roamed the earth, built the Pyramids, and substantiates the Old Testament.
If it's even legit (there have been plenty of hoaxes in the past), whose to say the fragments aren't of an animal?
I don't think this is one of those "ancient giants" theories (despite the name). I think the controversy is that this fossil challenges the idea that the Aborigines were the first hominids in Australia. If they're not really ancestral Aborigine remains, then why are they reburying them (never mind that one culture's modern view of burial practices are pretty far removed from those of 50,000 years ago or more).