Jos Verstappen's critical comments on Christian Horner came after they had apparently called a 'truce' amid the ongoing issues at Red Bull.
Jos said over the weekend that the team could 'explode' if Horner continues as team principal, despite the 50-year-old recently being cleared of misconduct.
Horner, who has always denied allegations of inappropriate behaviour, was also accused of 'playing the victim' by Jos.
It is already known that Red Bull have held crisis talks to resolve the feud, especially given what it means for star driver Max Verstappen.
Christian Horner is set to face the media today as Red Bull prepare for the weekend's Grand Prix in Saudi Arabia
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There is talk of Verstappen potentially leaving amid links to Mercedes while the Horner saga rumbles on.
And The Times say Jos' bombshell comments came after all parties had agreed to a 'truce'.
The 52-year-old, who celebrated his birthday earlier this week, is set to back away for this weekend's Grand Prix in Saudi Arabia.
Jos apparently wants the focus to be on his son, instead of himself, as Verstappen seeks a second triumph from as many races.
It has also been suggested the Dutchman will be taking part at a rally event in Belgium instead of watching his son in action.
Horner is set to face questions from the media on Thursday.
The 50-year-old is adamant he's done nothing wrong and, over the weekend, said he was 'absolutely' sure he'd be team principal of Red Bull for the season ahead.
While Horner is set for a grilling, however, Verstappen has been overlooked by the FIA.
The sport's governing body have opted to leave the Red Bull driver off their list for today's press conferences.
Lance Stroll, Charles Leclerc, Nico Hulkenberg, George Russell, Yuki Tsunoda and Valtteri Bottas will all face the media instead.
Verstappen will still face questions at Red Bull's hospitality suite, however, due to every driver's media duties.
Meanwhile, another person who won't be attending the Saudi GP is Horner's wife, Geri Halliwell.
Geri jetted out to Bahrain last week in order to support her husband publicly, with the pair holding hands as they walked through the paddock.
A source has told The Sun that Geri has 'read Horner the riot act'.
And it's also claimed that friends of the Spice Girls icon have been left 'astonished' by Geri's show of support.
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Christian Horner was supported by wife Geri Halliwell but the Spice Girls icon is set to miss the Saudi Arabia Grand Prix
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The insider is quoted as saying: “A lot of people who know her are astonished by this show of support.
"There is absolutely no doubt she is furious and has read him the riot act over what has happened.
“There are questions about her future with him and she let him know in no uncertain terms.
"It’s uncertain whether their marriage will survive but she is giving it a good chance by showing him support, at least in public.
“But deep down she must be hurt, humiliated and very, very angry.
Jos Verstappen broke a 'truce' with Christian Horner when he publicly criticised the Red Bull chief
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The insider is quoted as saying: “A lot of people who know her are astonished by this show of support.
"There is absolutely no doubt she is furious and has read him the riot act over what has happened.
“There are questions about her future with him and she let him know in no uncertain terms.
"It’s uncertain whether their marriage will survive but she is giving it a good chance by showing him support, at least in public.
“But deep down she must be hurt, humiliated and very, very angry.
