Peter Moody has parted ways with the owners of a horse he trained after an expletive-laden recording he had sent them, which criticised the jockey who rode their horse on the weekend, was shared.

Moody had sent a private audio update to the owners of Amalgamation following the Dundeel gelding’s heavy defeat – by eight lengths – in Saturday’s $175,000 Cranbourne Classic, in which he blamed the jockey for failing to ride to instructions.

But the link to the audio spread like wildfire via social media on Sunday, leading to Moody apologise to the jockey in a tweet. He also posted that “the client” would no longer be associated with his stable.

“In view of a audio report from myself to clients in regards to [the] jockey ... I wish to publicly apologise to [him] for this unprofessional and unacceptable behaviour toward him (sic),” Moody, who trained Black Caviar, tweeted on Sunday night.

“I have also privately done this. Unlike the client ... [he] will continue to be part of MR [Moody Racing].”

The three-year-old horse has since been transferred from Moody’s Pakenham stable to the Melbourne Cup-winning Cranbourne combination of Ciaron Maher and David Eustace.

Amalgamation has had just three starts and finished no better than eighth, with Moody telling owners in the post-race audio update that he was yet to discover the horse’s full potential due to the way it had been ridden.

“I’m trying to ascertain what ability this horse has got, and I’m just learning nothing from a ride like that,” Moody said.

“He was just given no chance to show up in the race at all. I wanted him in a flowing position where he could learn something, and we could learn something, and he just continually dragged him back and then when they quickened ... he just left him totally flat-footed.”