Bamba was one of Warnock's signings when he took over at the Welsh club in October and said he didn't 'want anyone else' when he lured him to Cardiff.
His dismissal on Saturday didn't change the scoreline, as the Bluebirds escaped with a point.
Aron Gunnarsson had given Cardiff the lead in the first half before Luke Varney equalised for Ipswich shortly before Bamba's red card.
The result leaves Cardiff 22nd in the Championship, 10 points off bottom-placed Rotherham.
Warnock, meanwhile, blamed Douglas for the Bamba red card. He said: 'I think Douglas has been clever - he has left his studs on the ankle. If the referee had just blown for a foul, it would have stopped all the hassle.
'But he tried to give advantage, which we didn't want, and it erupts. I have no complaints about the red card. It is disappointing that we lose one of our best players for three matches.
'I didn't really want to talk to Sol after the game so I will see him tomorrow. He just lost his rag but it was an aggressive attitude and I don't condone Sol's behaviour.
'He is distraught in the dressing room and quite rightly. For me, he is one of the best in the Championship and that was a blemish I haven't seen in his make-up.
'But I think it actually revitalised us and we had some good chances to win the game late on. It's shame we're talking about this and not a good performance from us.'
