Mark Hughes was ordered from the dug-out after he reacted in fury to the dismissal of midfielder Glenn Whelan, and he was still making his way to his new vantage point when defender Marc Wilson followed inside three dreadful first-half minutes at St James' Park with the visitors leading 1-0.
Wilson followed in short order for hauling down Loic Remy inside the box and although keeper Thomas Sorensen saved the resulting spot-kick, the writing was on the wall for the Potters.
Stoke, who were leading through Oussama Assaidi's superb 29th-minute strike, were also aggrieved not to be awarded a penalty of their own for handball against Mike Williamson when the Magpies broke and levelled through Remy, who had failed to convert from the spot seconds earlier.
In addition, Hatem Ben Arfa looked to have run the ball out of play before he set up Yoan Gouffran's 48th-minute strike, and further goals from Remy, Cabaye and substitute Papiss Cisse, who scored his first Barclays Premier League goal since April, completed what became a rout.
Pardew said: "It was a funny afternoon. It wasn't a funny afternoon after 35 minutes or whatever because the change we made wasn't quite working out for us and Stoke had a good foothold in the game.
"We were struggling to get any rhythm to our play and if I am honest, I was just waiting to get to half-time.
"Then in the second half, I asked the team to be clinical, to move the ball quickly, and it couldn't have gone any better. We were very, very good in the second half.
"I thought the Stoke players, all nine of them, conducted themselves very, very well considering the pressure of having to play against what we had on the pitch at that time."