Michael Jolley's expletive-laden rant to local BBC journalists effectively cost him his job as Grimsby Town manager, Sportsmail understands.
Jolley was sacked by Grimsby on Friday, which the League Two club said came 'following a recent run of poor results'.
But Sportsmail can disclose that club officials, including majority shareholder John Fenty were left shocked by Jolley's rant at BBC Humberside journalists Matt Dean and John Tondeur after the 4-0 home defeat by Leyton Orient last month.
In a four minute 12 second clip, which has since been leaked on social media, Jolley criticises the nature of Humberside's coverage and personally targets Dean and Tondeur.
'You are a f***ing disgrace,' Jolley says to Dean. 'Every time you interview me you're antagonistic, confrontational, who do you think you are, Jeremy Paxman? You are a f***ing disgrace of a journalist. The f***ing radio station gives us f***ing no positive coverage whatsoever.'
Jolley took particular exception to the way Humberside analysed the 7-1 thrashing by Chelsea at Stamford Bridge in the third round of the Carabao Cup in September.
The 42-year-old said: 'F***ing you and f***ing Gwilym [Lloyd] criticise us for playing man-for-man (marking) at Chelsea. I go on the Monday night show with Rob [Staton, Humberside sports editor] because he's a professional journalist and he's a f***ing straight shooter and you don't f***ing ask me a question or when I go off you say "yeah, it was the wrong decision to play man-for-man". Why not ask the manager? Because you've got no f***ing b*****ks, you have to snipe behind peoples' f***ing backs.'
Jolley, who leaves the club 18th in League Two following five wins out of 15 games, also attempted to address the club's performance this season. After Tondeur said he believed 'Town fans have seen some progress', Jolley added: 'We were f***ing 10th going into today, mate. Near the f***ing play-offs and have you seen our f***ing budget? Have you seen our budget. Do you know where we f***ing should be?'
The rant, which included the f-word a total of 58 times, left Dean and Tondeur stunned mainly because Jolley had appeared calm and composed in previous meetings. A number of the first-team players are also baffled by what Jolley said with many of them having enjoyed a good relationship with long-serving commentator Tondeur.
Sportsmail has contacted Jolley but at the time of publication he had not replied.
Anthony Limbrick, who was Jolley's assistant, will take charge of his first game as interim boss alongside physio Dave Moore against Newport in an FA Cup first round replay on Wednesday.