However, he's already been in prison for three years for the offence and Justice Martin Burns made a decision to suspend the rest of his sentence.
In extraordinary scenes, the 34-year-old smiled for the cameras and laughed to himself as he walked away from court through a media scrum.
Queensland Premier Annastacia Palaszczuk said this morning her Attorney-General would review the case and said she was open to advice from anyone - including Bravehearts' Hetty Johnston - who had ideas about ways to improve the law.
'I've already spoken with my lawyers and I've spoken with the other family, so what youse (sic) need to do now is leave me alone, ' he told Nine News. "How insensitive for this man to be laughing after the death of his stepson".
Tyrell died on the Gold Coast in May 2009 from internal bleeding and stomach injuries caused by blunt force trauma.
The court heard that two weeks before Tyrell died, Scown told the child's father he was anxious about the boy who, at the time, had a badly injured arm.
Tyrell's biological mother, and Scown's former de-facto, Heidi Strbak, 33, will face trial in three weeks' time also charged with his manslaughter.
HIS little body wracked with pain, feeling lethargic and running a high fever and unable to eat, drink or talk, Tyrell Cobb's last day alive was one of "horror".
Matthew Scown laughs after leaving court yesterday.
"There is a growing concern from the general public about whether sentencing for criminal offences arising from the death of a child are meeting community's expectations", Queensland's Attorney General Yvette D'Ath said.
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