Simpson and Pratt appeared on The Footy Show on Wednesday night to admit their involvement in the affair.
North president James Brayshaw, a member of the television show's cast, said that when the club knew all the facts it would decide on sanctions, including possible fines, contradicting CEO Eugene Arocca, who said earlier in the day that no penalities would be applied.
Mid-afternoon, every member of the North squad was present at a conference initiated by former skipper Simpson and current captain Brent Harvey.
So too was Arocca, who had fronted the media early in the day.
Arocca said all 46 players were responsible for the video, which had been produced to break the monotony of pre-season training.
The video, posted on the website YouTube, featured a rubber chicken performing simulated sex acts in a supermarket, a hotel toilet, the club's locker room and its offices.
"I think from the person who conceived the idea, to the last young man or player on the list who watched it and didn't do anything about it ... they all should share that responsibility," Arocca said.
"There was a collective of players involved in the filming and we see no useful purpose in individualising those people, because every one of the playing group understands and accepts full responsibility."
Arocca confirmed that every player had viewed the video, and Simpson added that he should have discouraged it at the time.
"I don't why, being the oldest player, I didn't knock it on the head straight away," he said.
"It was a prank gone wrong. It was meant for our eyes and it was obviously the wrong thing to do.
"We understand what's happened, we apologise and we've just got to hopefully put a full stop on it and learn from this.
"For someone to put it on the internet as well, we're really disappointed in our own actions."
Offended now when he thought about the video, the 33-year-old said his teammates were very embarrassed about it.
However, Simpson, who was drafted to Arden Street in 1993, defended the club's culture and the players' attitude towards women and said they would undertake any community work expected of them.
"We've got good morals at our footy club," Simpson said.
"I have been here for 15 years and I can assure you it's an aberration.
"I'm married and I have three children, and so is Brent."
Harvey, in his first year as captain, supported Simpson's sentiments and said he had addressed his teammates.
"On behalf of the playing group, I'd like to apologise for the video. We certainly didn't mean to offend anybody," he said. "We take full responsibility.
"It's certainly not the culture of our footy club and it certainly won't happen again.
"We are not happy with the way it's come out and what we've done."
Arocca said that the players would make their own donations to a charity devoted to preventing domestic violence.
Activist Phil Cleary, who was vocal about the inappropriateness of the video, would also be invited to speak to the players.
"We've already spoken to the AFL. I've spoken to (general manager of football operations) Adrian Anderson and Sue Clark, the respect and responsibility officer," Arocca said.
"From a club's perspective, we see this as an opportunity to further educate our players about their responsibilities and about their understanding of what their role is as footballers."
