The midfielder was that confident his 52nd-minute strike had beaten Aberdeen goalkeeper Jamie Langfield.
His superb strike was the only goal of the game at Global Energy Stadium.
Quinn ran on to a Melvin De Leeuw pass and fired an unstoppable shot high into the net.
Despite an all-out assault on the home goal in the final stages, which included more than five minutes of injury time, County goalkeeper Mark Brown was never seriously threatened as the Dingwall men held out for all three points.
Describing the goal, Quinn said: "It was nice - it was my second goal of the season. I think I was already celebrating before I put the ball in the net. The ball ran a bit further than I thought it was going to so I had to get onto it a bit quicker but once I got the touch I just made sure I hit the target - I put the laces through it as hard as I could, and thankfully it went in."
He added: "It was great ball from Melvin, I thought he was excellent.
"He's been great since he's come in pre-season. He works really hard - you can't teach the wee bits of finesse and touches he has - he's definitely got it."
Quinn admitted it has not all been plain sailing for County this season.
"It's been up and down for us," he said. "But it's important to win your home games - if you can win them and try and take something away from home you will do well. That's what we are aiming to do this season.
"Some of the goals we've lost this season have been inexcusable. We've looked at it time and time again. The gaffer has worked with us at training to try and prevent these things happening. So to come away, especially against a team like Aberdeen with the players they have got, with a clean sheet is fantastic."