As Postecoglou prepares to coach against his former club for the second time this season and the first time in Melbourne, he reflected on the events preceding Roar's 5-0 Week 2 win.
"That was my first game at a ground where I've had some great memories," he said.
"Now there was a couple of ways they could have addressed that as a football club. They chose to try and sell some more tickets."
Since that loss, third-placed Victory has emerged as a genuine Championship prospect on the back of some of the best attacking play in the competition. By contrast Roar has struggled to build on the momentum from its win and is languishing in ninth place.
Postecoglou is looking forward to call on a full-strength team for the match on Saturday, as well as Victory's renowned vocal home crowd.
"Some of the fans weren't too friendly but they probably took their cue from the club," Postecoglou said.
"That's the message the club wanted to send out. Some supporters took that on board. Some supporters were great to me.
"The beauty for me is there'll be 20,000 who'll be behind me this week.
"It's a great part of being Melbourne Victory coach - you get a fair bit of support at your home ground."
Postecoglou will put Australia stars Archie Thompson and Mark Milligan straight back into the starting side, while left-back Adama Traore has recovered from injury and is set to play.