Speed, DC, nearly came to blows
Paul Gutjahr, an FIA representative who was present in the stewards' room, told the Swiss 'Blick' newspaper that as Toro Rosso's Californian rookie said 'f**k you!' to Coulthard, a fist fight 'nearly' broke out.
''Luckily, the Scot (Coulthard, 34), held himself back,'' said Gutjahr.
If not acceptable, 23-year-old Speed's reaction was perhaps understandable. He had just told the media that driving into parc ferme with a maiden point had been the 'most emotional experience of my life'.
''My whole team was on the fence cheering like I won the race,'' he enthused.
''It was like a victory.''
The affair has been a PR calamity for the energy drink company, with billionaire Dietrich Mateschitz owning both Toro Rosso and Coulthard's senior team.
''Just to make one point clear,'' read a Red Bull Racing document, ''Red Bull Racing did not lodge a protest against Scott Speed.
''The Stewards had reached their own decision about his passing move (under yellow flags) on Coulthard.''
A Toro Rosso released added: ''As you can imagine, relations between the two teams was to say the least a bit strained.''