David Warner has attempted to distance himself from his older brother's Twitter outburst that slammed Australia opener Shane Watson.
It read: "F***ing selfish Watson sooner your out if the side you great pretender the better."
The account was deleted on the weekend, but Steven Warner initially told Fairfax Media he was not responsible for the tweet and that he "wouldn't have a clue" who was.
David Warner then contradicted those comments, confirming his sibling had posted the message.
"Earlier this week, my brother Steven Warner published a tweet about Shane Watson. Like everyone, he is entitled to his opinions but I want to state categorically that I do not endorse his comments and fully support Shane and all my teammates," David Warner said in a statement.
In addition to criticising Watson, Steven Warne also praised sacked coach Mickey Arthur who has started legal proceedings against Cricket Australia (CA).
"Good on Mickey Arthur finally letting the truth be known and proving he was just an escape goat #awesomebloke #Gentlemen."
Another comment published by @warnedog79 in the midst of Australia's first-innings carnage called on national selectors to reinstate David Warner, calling him a batsman "who will have a go".
David Warner has been on the outer since punching Joe Root in a Birmingham nightclub, an indiscretion that earned him a three-match ban by CA.
Devoid of match practise when the Ashes started, he was sent to South Africa to play with Australia A but managed just six and 11 against a Zimbabwe Select XI in Harare.
Warner was fined $5750 by CA in May for his expletive-laden attack on two News Ltd journalists.
Steven Warner was a NSW under-17 representative, touring England in 1996, but walked away from cricket. He is a plumber by trade now working as a Virgin Australia baggage handler.