In a bid to overcome their embarrassing 123-point loss to West Coast on Sunday, the Dogs hit the track - or more so, each other - on Tuesday at Whitten Oval as the dust settled on their fourth loss in five games.
Giansiracusa, 29, said the session took him back to his early years when football was less concerned with recovery and sports science and more focused on tough training tactics.
"It was pretty full on. It was back to the old days of competitive work. It didn't go for long but we were paired up against one of our mates and told to crack in and let it out," he told afl.com.au.
"It was short but all competitive. In today's footy you probably don't have a great deal of that in your sessions.
"You might have a drill here and there where you do competitive and the rest is a lot of structures and recovery based training, getting yourself up for the week after because the game is so gruelling.
"We thrashed it out and it was good. I think everyone felt a lot better after it."
The Bulldogs issued an open letter from president David Smorgon on Monday that said the season wasn't considered over despite the fourth worst loss in the club's history and the biggest since 1996.
Giansiracusa said the players had to expect scrutiny and criticism in the days after the defeat but had managed to work their way through it as a cohesive team.
"When you have a loss like that, you've got to cop it," he said.
"It was embarrassing, it was disgraceful, all those things.
"But, as a group and a club we've just got to stick together and I think we've done that very well.
"We've been soul searching, we've got out on the track and we've worked really hard and hopefully that stands us in good stead.
"Some of the efforts we put in weren't Bulldog-like, and I know we've got it in us so I know we can turn it around."
Giansiracusa said it was too easy to blame injuries - Barry Hall hasn't played since round five because of an ankle, Brian Lake since six because of form issues associated with his knee and Adam Cooney missed last round with knee soreness - on the form slump.
He also said it was up to the club's leaders and senior players to make sure last week was not repeated.
"We've got to take responsibility as a leadership group. We've talked about that," he said.
"All we can do is put forward a better effort this week. You can talk, analyse all you want but Tuesday was good; it was an action day and we've got to make sure we compete on the weekend and bring that effort.
"We definitely feel it, and so we should because we were put in that position of responsibility."
Despite the slump, which has seen the Dogs fall to 11th on the ladder, Giansiracusa said he believed the campaign to progress beyond a preliminary final this year was not over.
"We're making it pretty hard for ourselves but when we're on, we can match it with anyone," he said.
"I still fully believe that and it's good. There's young guys who are going to get opportunities, and I've got faith in our list not just the team in terms of the core group.
"We've got a pretty strong culture at our club and it's being tested a little bit at the moment but internally, we still believe. We've just got to do it now."
