Both captains Faf du Plessis and Steve Smith said afterwards that personal things were said on the field, which spilled over off it as CCTV footage obtained by IOL Sport showed that Warner had to be held back by teammates Usman Khawaja and Tim Paine from getting closer to De Kock as the players walked up the stairs.
Both players will be on the carpet for "conduct that brings the game into disrepute".
But however big or small this mess might be‚ the damage to the respectability of the series has been done by security camera footage of Warner spewing what looked like - there is no audio on the video - verbal abuse at De Kock emerged online on Monday.
David Warner has been hit with three demerit points and fined 75 per cent of his match fee after deciding not to contest the Level Two charges that came from his altercation with Quinton de Kock.
After Australia sealed a 118-run victory, the focus was squarely on who or what caused the bust-up, with recriminations on both sides as both Warner and De Kock were accused of making alleged derogatory comments of a personal nature. That's part and parcel of Test match cricket.
Match referee Jeff Crowe is believed to be looking into the incident but there has been no comment yet from the International Cricket Council.
"As I went past de Kock he said what he said and luckily I suppose I was there in between", Australia's keeper declared in Port Elizabeth.
Smith said after the game he is not aware of the Australian team crossing the line with any personal sledges during the spiteful fourth day.
Warner should be free to play the second Test, though will be on the brink of suspension if he errs again.
Former England test captain Michael Vaughan, however, suggested Warner's rumoured track-record of aggressive sledging means there is no defence for his reaction to de Kock's reported taunt about his wife.
South African manager Mohammed Moosajee also blamed Warner.
"I'm sure the captains will chat and the coaches will chat and we'll get away to play the game", Lehmann said.
"Australian teams have generally been at the top of the pile, not every minute of those times, but generally they're a very competitive, world-class team, and some would say they don't need to do that".
"From what I've heard there was a lot of personal stuff being said, to and from".
"We play our best cricket when we're aggressive, we're in the fight together, we're hunting as a pack", Smith said.