The 50-year-old was incensed when Williamson was dismissed during a 3-0 defeat to Leicester City in one of Newcastle's final few games last season, saying afterwards to the media that the defender had been sent off on purpose in order to miss the club's last fixtures.
The incident was just one of what was a peculiar spell for the Newcastle under Carver's management, which has since ended as the Magpies appointed Steve McClaren.
But Gutierrez, who was released by the club at the end of the season on the same phone call as defender Ryan Taylor, defended the former St James's Park interim, playing down the incident and implying that Carver and Williamson had sorted things out.
“Sometimes you say things that you don’t really think about," the Argentine told the Gazette.
“We know how Mike Williamson is as a player, he’s really honest, but after that they spoke and it was finished."
The former Mallorca man, who recovered from testicular cancer to score Newcastle's second goal as they won their Premier League safety on the last day of the season, said that it wasn't uncommon for things to be said in the heat of the moment that are easily sorted out later.
“Sometimes, players as well, you can say something in the moment that you don’t think through properly," he added. "Then you can speak with the players and say sorry, I made a mistake.
“I don’t think JC [Carver] meant to hurt Mike Williamson because he knows how he is as a professional.”
It is clear that despite concerns about Carver's ability to do the job, as well as the way in which certain decisions were executed regarding players' futures, Gutierrez and the current Newcastle players have no ill feeling now departed Tyneside native.