Hampstead disallowed a 33rd minute try to Gold Coast winger David Mead, ruling teammate Luke O'Dwyer had pushed rival forward Chris McQueen in the back.
A minute later Hampstead gave the green light to a try up the other end of the field to Rabbitoh winger Justin Hunt after numerous looks at the video.
Titan's skipper Scott Prince however felt a slight touch by McQueen had deflected the ball forward.
"I thought I had it covered," said Prince when asked if there was a deflection.
Cartwright, who in the past has unloaded on match officials was prepared for the line of questioning.
"I thought you (media) would want to talk about that," grinned the Titans coach at the post-match press conference when asked about two highly controversial decisions.
"I don't think anyone would have been surprised if they both had gone the other way."
Cartwright then borrowed a Forrest Gump quote to express his thoughts saying: "you don't really know what you're going to get".
Cartwright's comments may have been different had he not received an official NRL memo last week outlining what coaches could and couldn't say about whistle blowers.
"I don't even know what I can say to be honest with you," he said.
"I'd rather not talk about the refs, they're coping a hard time as it is."
Souths deserved the win, their sixth in a row for the first time since 1994. The final scoreline made closer after late Titans' tries to Aidan Sezer and Kevin Gordon.
Prince, revealed he had "copped a decent spray" from Souths players after speedy winger Andrew Everingham picked off his cut-out pass and sprinted 90 metres to score in the 51st minute to extend the lead to 16-6.
"I just said 'I'm coming back for you, so don't fall asleep'," he said.
Asked if he could repeat what was said to him, Prince replied: "we'll just leave it on the field, that's what normally happens."
