This comes after the Mpumalanga outfit lost out on Betway Premiership promotion for a second season running – this time to rivals Orbit College – in the three-team mini-league campaign that on Tuesday concluded with them failing to register a single victory.
In a dead rubber match at Cape Town Stadium, Casric salvaged a 1-1 draw against the now-relegated Cape Town City, and Mthombeni noted that the lesson is to defend well and aim for marginal victories.
"This is a mini-league, and the mini-league is a problem. You can even take Leruma [United] – a team that's relegated, and bring them to the play-offs, a team that defends well is the team that puts themselves in a [position] to win this thing," said Mthombeni.
"You don't need to open up, especially in the play-offs, where one point is very valuable. If you get three [points] out this, it's very good.
"The lessons I've learnt – I think when we play home, we need to make sure you defend well, and if you can't take three [points] then you take one."
As co-owner and interim head coach, Mthombeni says he will present his coaching credentials to the board, including performance stats, to determine if he should remain in the role or if the club should appoint a new head coach for the upcoming season.
"Remember you can be part-owner, but you must still follow the protocol – I need to also put my CV and, as a coach, we need to go and give a presentation and they will check the stats obviously and see where I can correct," he explained.
"I will hear from my boss [what he says], but I think I didn't do very bad because I came here when there were 19 games left and I collected 34 points, and I only lost 23 [points].
"If you check the stats, I think my [points] percentage overall is 60 percent, but I will hear from my management."