Pardew is under intense scrutiny and defeat at Watford would in all likelihood bring an end to his tenure, but he vowed to not walk away from the job.
He said: "It's difficult. The stuff which came out of the dressing room on Saturday was disappointing because what goes on in the dressing room should stay in the dressing room, in my opinion.
"But we did have drug testers in there so we had people in there not normally associated with the dressing room.
"Having said that I'm not sure if our fans will be disappointed in that. What do they expect us to do? Not have words, let's not have conflict in the dressing room after a performance like that?
"It was not just Brunty, the captain and everybody else, myself and John Carver all had opinions on why that performance was such.
"I'd be foolish and not a good manager if I didn't listen to those comments and look at them in reflection on Monday and Tuesday and come up, hopefully with some answers for Saturday.
"I've always been questioned as a manager. Of course you get players coming into your office and saying, 'why am I not playing?' That's questioning you.
"It's not a personal thing, and I don't think it should be personal, but it is about the football club.
"These guys are paid a lot of money to play for the football club.
"Obviously I'm the manager but there's everyone associated with this situation. I've made it very, very clear to them people will lose jobs.
"It might be the manager it might be staff underneath me that might have to lose their job if we get relegated. So we've go to fight. I want to see fight on the pitch."