Sean was denied a try to cap his man of the match winning performance when his touchdown was disallowed by touch judge Alan Lewis for a forward pass.
But Sean admitted victory was all that mattered for Scotland after their scrappy triumph over Italy, saying: "This was a must-win game and thankfully we've come up with the goods. I think everyone will be pleased now.
"We have always had faith in ourselves but there is only so much you can take in the way of defeats so we are extremely happy."
Of the touch judge's decision to rob him of the try his performance deserved, he said: "It wasn't forward according to me. I was happy enough."
Sean's Glasgow teammate, Scotland skipper Gordon Bulloch, writes about yestarday's game in his Scotland on Sunday column.
"I saw Sean Lamont's try as a '50-50' decision. It was just one of those things and thankfully it didn't matter in the end. Sean did very well yesterday. We had said to him beforehand to go out and play his usual game of running right over the top of people, as he's very strong guy. That's what he started to do and the more we can see of that, the better it will be for Scotland."
You can read Gordon's article here