Whistleblowing policeman Rick Flori's lawyer has labelled prosecution suggestions he was motivated by a personal vendetta against a superior as nonsense and his actions "caught several in the crossfire".
Flori, 47, is on trial for misconduct at the Southport District Court after leaking footage of police bashing a handcuffed man in the basement of a Gold Coast station car park in 2012.
Prosecutors allege Flori released the footage after realising he could discredit a rival officer involved in the arrest.
Senior Sergeant David Joachim was one of four officers seen on the footage of the arrest of Noa Begic in Surfers Paradise in January 2012.
Crown prosecutor Todd Fuller says Flori, motivated by being overlooked for a promotion Sen Sgt Joachim received in 2011, leaked the footage solely to discredit his rival.
Mr Fuller said an email written under an alias by Flori discussing the footage with a journalist only mentioned Sen Sgt Joachim and none of the other officers involved, even Senior Constable Ben Lamb who was later disciplined for kneeing and punching Mr Begic.
"The email doesn't even mention Constable Lamb," Mr Fuller said.
"His attack is on David Joachim. Rank. Name. Position."
Flori's defence barrister Saul Holt QC says his client's actions were purely to expose corrupt and criminal conduct.
"If his focus was Joachim, he catches a lot of people in the crossfire," Mr Holt said.
"If this is a vendetta there's hardly a hint in the email."
Mr Holt said the prosecution has given no indication how leaking the footage would discredit Sen Sgt Joachim beyond causing him "minor embarrassment".
"Senior Sergeant Joachim was the senior officer visible in the footage," Mr Holt said.
"The reason he's the only officer named in the email is entirely obviously because he is the more senior person."
Mr Holt said subsequent "laughable" lies by the officers involved in an attempt to avoid investigation of the incident had borne out Flori's concerns the incident would be covered up.
"The email was accurate and truthful on how police would handle the footage," he said.
Earlier on Monday, Judge David Kent dismissed a second misconduct charge against Flori alleging he had intended to cause detriment to former police commissioner Bob Atkinson for a lack of evidence.
The trial is set to continue on Tuesday with Judge Kent giving his summing-up.