But the 27-year-old has since rebuilt his game to emerge as an inspiration to his teammates and is intent on playing a leading role in the Sunshine Coast's quest for Intrust Super Cup redemption.
Platt was with the state league side from 2010-13 but then moved to Townsville.
His father, former England international Andy Platt, lives in the north Queensland city.
For two years, Platt hardly touched a ball, focusing on family and work.
But the compulsion to lace up again proved too hard to ignore so he gave Falcons coach Glen Dreger a call.
Platt has proved to be a rock for the club - last year's wooden spoon "winner" - this season.
He has played all but one of the Falcons' seven games despite the presence of more than a handful of on-loan Melbourne Storm players.
"His training and work ethic is an inspiration to young players (at the Falcons)," Dreger said.
"He could have come back and maybe coasted, but he does everything he possibly can at 100%.
"It's good for the young fellows to see that and I think some of them have jumped on the back of that."
At 181cm and 96kg, Platt is not the biggest man in the competition but Dreger says "he's plenty tough enough".
"And he takes that training (ethic) on to the field," the coach said.
"When he's out there he gets every bit of energy out of himself."
That approach to the game must run in the family. Andy, the 1993 player of the year in Super League, fashioned a career on being gritty.
"His old man was probably one of the toughest players I've ever seen," Dreger said.
Platt said he definitely had more to offer the game and was enjoying it more than ever.
"When I was here before and I was a bit younger I kind of took it for granted and didn't respect it as much as I do now," he said.
"I really appreciate the fact I'm able to play at the standard that I'm playing."
Platt was part of the Sunshine Coast side that had a link to Manly when beaten by Mackay in a preliminary final in 2010.
"WE WERE the best team in the comp that year. We should have won," Platt said.
He was also part of the side for two forgetful campaigns when it did not have an NRL connection.
Now he is helping to guide some of the "local" players through the attachment with the Storm.
"When we had Manly every week it was an absolute roller-coaster and I think that stands me in good stead this year," he said.
"I've told some of the younger fellows they've got to keep turning up to training and working hard.
"The boys are now in a genuine Q-Cup system and know they have to work a lot harder than what they might have done previously. That's a good thing."
Tomorrow, Cairns, 2pm
Courtesy of Steele Taylor of Sunshine Coast Stadium