The manager joined his players and coaching staff on the pitch after the final whistle to join in the celebrations and he took part in a lap of honour in front of the Ibrox faithful.
The party then continued in the home dressing with McCoist getting drenched in champagne before he chatted to the media in Ibrox Stadium’s press room.
A sensational first-half hat trick from captain Lee McCulloch was enough to give the Light Blues the crucial win which took them over the finish line and the gaffer believes it was a terrific display against Gary Bollan’s in-form Diamonds.
He said: “We’re delighted, absolutely delighted, not only to wrap the title up but I think the manner we wrapped it up tonight, particularly in the first half, was really pleasing.
“We’re thrilled for the staff, players and the supporters. It’s been a terrific league campaign and I thought we finished it well tonight.
“It’s certainly an achievement to win the title. I wouldn’t really be qualified to say how big an achievement it is but it is certainly one we set out to do and needed to do.
“It’s part of the journey back. I think we have 26 wins from 28 games so that is a good achievement you would have to say. Dunfermline have done well because we might even have won it earlier with statistics like that.
“So the players deserve an absolutely enormous amount of credit and it’s been a great night for them and indeed the supporters.
“I don’t think it was that important because of Sunday, Sunday we have gone over. We just wanted to win the title as quickly as we possibly could. We have done that and we’re delighted with the manner we did it tonight.
“Winning things is a wonderful feeling no matter what it is or where it is. These are all championships we have to win to get back to where we want to be in the top flight.
“These are stages in our recovery which must be met so I think it’s only fair they should be celebrated as you would winning any league.
“We have boys in there in the dressing room who are winning their first league and the majority of players will go through their careers and not win leagues.
“So our boys are well within their rights to really enjoy tonight and we’ll make sure they do.”
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