"Our country needs more patriots and Griquas have decided to offer Saru our unwavering support," he told South African news site DFA. "Everyone has the right to choose who they support but that doesn't entitle anyone to misuse our structures for their personal benefit."
Louw also asked Afrikaans news site Netwerk 24 how children could be coached by people who support other countries. "He can't expect us to appoint him if he supports another country."
Carney, who played first grade rugby for Griquas at Currie Cup level, had spent the three years to 2012 in New Zealand playing for the Wellington Lions before returning to South Africa as head of rugby for High School North Cape.
"I lived in New Zealand for three years, which is where I became a fan of the All Blacks and their style of rugby," Carney told DFA.
"I'm not going to deny liking the team because I have a right to freedom of choice and to back the side of my preference. I also support the Boks but it really shouldn't matter as it has nothing to do with my ability as a coach."
Louw later said he hoped the two coaches came to their senses and were rehabilitated.
"If they are willing to commit to supporting the Springboks, we would welcome them back with open arms."
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