I think one of the states recently introduced laws requiring referees of children's matches to stop play when parents became abusive on the sideline and demand the parents leave the game. Maybe this is the fallout:

Dad banned from junior football games

http://www.smh.com.au/news/National/Dad-banned-from-junior-football-games/2007/08/07/1186252700123.html

A 48-year-old father has been banned for life from junior football games after being charged with assault for allegedly knocking out a boy who scuffled with his son during a match in Perth.

Police allege the man ran on to the field and repeatedly punched his son's 13-year-old opponent during the last quarter of a junior Aussie rules match in south suburban Attadale on Saturday.

The boy, who lost consciousness during the assault, was treated at hospital for facial injuries, police said.