"I've been fortunate to have coached Kevin and Jesse during their younger years at Melbourne Storm and they are quality men and they're going to be very good role models.
"Obviously we learn from our lessons and it was a hard one for them, but in my eyes now, that's been put to rest. How they go about their football now and how they act on and off the field, I think we'll see two very strong characters."
The controversial Denver test has NRL clubs concerned over player welfare due to the amount of travel and the fact the match will be played at altitude at Mile High Stadium, while there are also worries over the potential for off-field drama during their time in the United States.
But Maguire has experience in dealing with those issues from his time as South Sydney coach, after Rabbitohs forwards John Sutton and Luke Burgess were arrested for their part in a bar brawl during a wild night out following a high altitude pre-season training camp in Flagstaff, Arizona, in 2015.
Sutton was stripped of the club captaincy and Burgess was later released from his contract but Maguire says the positive manner in which Sutton responded in the wake of the incident proved to be the making of him as a person and leader.
Bromwich and Proctor now have the chance to find similar redemption as they look to move on from the night that tarnished their careers and reputations last April.
"Unfortunately a couple of players made some wrong choices and they had to pay a price," Maguire said.
"John's made some strong changes to who he is as a person and it's helped him to get where he is now and he's playing good footy.
"So you're always learning, a bit like Kevvy and Jesse have been through.
"John's showing great leadership and that's the opportunity that Jesse and Kevvy get now, to show great leadership off the back of something that wasn't right at the time.
"When a player goes through certain things in their careers and they might not be right, it's what they do next, and Kevvy and Jesse are definitely in that situation.
"They'll be better people for it and it's just unfortunate that you've got to go through those things when you make a mistake."
As for the debate over whether altitude will be a health issue for the Kiwis, Maguire is adamant it won't be a problem.
The 44-year-old is known for leaving no stone unturned in his pursuit of excellence and adopting the latest in high performance training methods.
The Rabbitohs' 18-day camp at the Grand Canyon had great benefits for the side, despite the trip ending in negative headlines.
"Putting that aside, the camp was actually very successful and unfortunately that happened at the end. There's a lot of talk about the altitude. I've had quite a bit of experience in that arena and for the first two days, you'll feel the air a bit different, but after that, you're away and into your training.
"We need to put everything around those players to be in the best state they can be in their time travelling over, in Denver and obviously on the way back. I can assure [NRL] coaches that there's not a lot to worry about. There's a lot of things around recovery and the expectations of what clubs are doing, and what players should be doing is what we need to adhere to."
