The pair had already had a disagreement on the pitch as Campbell wanted to take the Seasiders' second penalty after Adam had missed the first moments earlier. Blackpool's captain got his way and emphatically put his team ahead before Jermain Defoe's late equaliser.
However, Holloway said the argument continued long after the match had finished, saying to the Blackpool Gazette: "It is a little bit upsetting for me that they care so much they ended up with a little row going on. I had to sort out a feud on the way home between DJ and Charlie, but that is how much they care."
He added: "I actually would have agreed with DJ if they'd asked me. I thought he should have taken it. But it just shows what Charlie is all about, that he had the bottle to want it straight after missing one."
Holloway believes the incident can be taken as a positive rather than a negative as the team battle against relegation with two games to go.
"The bottom line is that DJ wanted to win so badly, so did Charlie, and that is what it is all about," he added.
"You have to look at what is at stake. We are all so desperate to stay in this wonderful league.
"We had some things to say to each other in the dressing room afterwards. Everybody had something to say.
"But they have to remember how proud I am of them. Nothing will ever change that, and nothing will ever change how I feel about this place."