If you think Danny Vukovic was treated harshly, have a read of what happens if you are, say, 11 or 12 and you hit a ref. This is a quote from Football Brisbane's Disciplinary Policy 2008 (ie after Vukovic on Shield - note also that Shield is a Brisbane based ref):
"Deliberately striking a match official by way of physical contact with any part of the body or the use of any object. Recommended minimum penalty: 10 years suspension from all facets of the game (player or team official), $5,000 fine on club."
or even a much lesser offence:
"Deliberate physical contact with a match official... Such conduct would include, but is not limited to, deliberately pushing a match official. Recommended minimum penalty: 2 years suspension from all facets of the game (player or team official), $800 fine on club."
10 years or 2 years that is the end of football for a 12 year old.
Joel Griffiths and Danny Vukovic were saved because they are part of the football establishment. Some kid who loses it - is finished.