The ugly scenes also forced Arsenal into a long-overdue look at their behaviour on the pitch.
Wenger's team have picked up only one red card in the Premier League since - Ashley Cole's dismissal against Leicester City in December being the only blemish.
"I feel it was the turning-point," Wenger told reporters in March as his team cantered towards the title. "With them missing the penalty in the last minute, us not losing and then having to deal with all the incidents.
"We dealt well with the situation. We came out and said we were sorry and it's not how we want to behave. And since that, we've focused purely on football.
"You have to choose -- are you focused on fighting or on football?"
United got their revenge for what smacked of a defeat by knocking holders Arsenal out of the FA Cup semifinals the following April and going on to triumph in Cardiff.
Victory for Ferguson also denied Arsenal a golden opportunity -- against second division Millwall -- to make history by becoming the first club in over a century to lift the trophy three years on the trot.
Ferguson has already begun winding up his men for Sunday's battle with the league leaders, describing it as a "must-win" game within minutes of Saturday's 0-0 draw with Birmingham City.
He was then quoted as telling Sunday's << "The disciplinary treatment was ridiculous when you think that Eric Cantona got nine months for attacking a supporter," he added, referring to the former United forward's assault in 1995.
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