Police prosecutor Fiona Roberts told the court that Holtslag did it for a $500 bet.
After he was "apprehended" by security and taken to the sidelines, he told them, "It was worth it."
A Justice of the Peace told him today that "half of New Zealand" saw his performance, and that it was "offensive to an awful lot of people".
He fined him $500 plus court costs.
Outside court, Holtslag said it "definitely wasn't worth it" - when he told police afterwards that it had been, it was "still drunk".
He wants to now put the incident behind him, saying the media attention he's received has been "ridiculous".
"It's not worth the stress," he said.
Footage of the tackle by security guard Brad Hemopo, himself a Canterbury rugby player, went viral on the internet, and divided opinion over the "king hit" went too far.
Days later, Holtslag himself told APNZ that while he was left nursing sore ribs from "a bit of a cheap shot", he doesn't want to take the matter any further.
"It was a good hit, eh?" he said.
But today he said he had a fractured rib and was "still a bit sore".
He still holds no ill will towards Hemopo: "It's all over now."
Watch: Streaker tackle defended
Holtslag recalls the incident clearly, but he "didn't see that [tackle] coming at all".
"I wasn't going to resist or anything. As soon as they got me, I went along with it."
He had travelled to the game with five mates, and earlier in the day watched the Nude Blacks v England naked game.
He's now hoping his mates will cough up to pay his $500 fine imposed by the stadium.
Holtslag was also banned from there for two years.
