Last Saturday in Adelaide he lost Rudy Gestede and Callum McManaman, his two big attacking signings, with injuries in only the second game of the season.
And for much of this match he must have feared that his side, despite being the better team, would crash to a third loss of the season.
Brimmer, who moved back to his home city this season having played 60 games for Glory earlier in his career, was the hero, but Robbie Kruse was also a key man for the winners and as he regains match fitness he will become even more of an asset.
Now 32, he doesn’t have the pace he once did, but he still possess the skill, guile and trickery that brought him a long career in Europe and with the national team.
He drifted left and right, always moving with purpose and intelligence, driving at the defence or looking to play his teammates in.
In the first half, Perth struggled to cope with his movement and ingenuity: his backheel to Brandon Lauton (one of two new faces in the starting line-up) after he chased down a Traore through ball set the youngster up for a shot which he sent wide
Ten minutes from the interval Kruse was desperately unlucky not to break the deadlock himself, once more linking with Traore before driving a first-time shot which Perth goalkeeper Tando Velaphi did well to get down and save.
Marco Rojas seemed energised by Kruse’s example, taking every opportunity to run at opponents, several times jinking this way and that to create space for a shot or a pass.
But neither man could make the breakthrough and Glory, with the dangerous duo of Fornaroli and Andy Keogh up front, were always dangerous in transition and when Victory turned the ball over, which happened a bit too much for Brebner’s liking in the opening period.
Jacob Butterfield went close to giving Victory the lead their pressure deserved shortly after the restart when he unleashed a fierce drive from distance which Velaphi dived well to tip over the bar.
Max Crocombe at the opposite end had to be alert to keep out Glory midfielder Carlo Armiento’s pass.
Brimmer was played through and had a great chance to score but his effort was too weak and Velaphi saved easily.
The Glory keeper, making his first appearance of the season, again excelled on the hour mark with a wonderful diving save to deny Rojas.
Perth thought they had done enough when Fornaroli, in trademark fashion, peeled off his marker and found space to head home Armiento’s cross.
But it was Victory who finished the strongest in a finale which will give Brebner and his team a massive boost.
Michael Lynch is The Age’s chief soccer reporter and also reports on motor sport and horseracing