"I'm very passionate when I play the game. I overstepped the line and hence I'm missing a game," Warne told Fox Sports on Tuesday night.
"I thought it was a pretty harsh penalty but I was more disappointed in my own actions, especially as a captain.
"It was emotion and passion. We sometimes like to see that in sportsmen and not robots.
"I apologise to the fans and I apologise to everyone. Sitting and doing detention, it's not easy to watch the boys."
Australia's leading Test wicket-taker said he didn't want to be judged on one behavioural lapse late in his magnificent career.
"I'd like to think of the 25 years I've been playing first-class cricket rather than just one game," he said.
"I'd like to think there's a lot of positive and good things I've done for Australian cricket and all that sort of stuff over the years.
"One little incident here or there (doesn't matter).
"I do apologise for my behaviour and I'm disappointed in my own reaction."
-AAP