Lehtonen, who turns 33 on Wednesday, improved to 3-4-2 with a 2.96 goals-against average and .899 save percentage.
He said the loss at Winnipeg, where he was pulled after 30 minutes having given up four goals on 11 shots, was just one of those nights.
"The only good thing was that I started it and usually you get pulled at some point when things are really bad," Lehtonen said. "Then I was able to sit and watch. It was of those games that usually happens once a year or once in a hundred games, when everything goes wrong.
"It was the middle of the trip. After the game, nobody just went home and our separate ways. We went to the plane and we had a day together to kind of regroup. That really helped. It was all about the team. It was really key, I think."
Stars coach Lindy Ruff didn't like much about the loss at Winnipeg and said discarding it was a better course of action than overanalyzing it.
"It's my responsibility to break it down when you have a game like that and not go overboard," Ruff said. "I mean, 3-2, 8-2, 10-2, Montreal had a 10-0 [defeat]. You've got to put it away and put it away quick. You can't kill people over that game."
That strategy worked for the Stars this week, proven in the bounce-back performances at Calgary and Edmonton.
And turning to Lehtonen for another start at Calgary, then on back-to-back days by sending him right back in against the Oilers, was key.
"I thought he played well and we went with him back to back," Ruff said. "We need a goaltender to get on a roll, and I think sometimes the more they play, the more comfortable they feel.
"We had a discussion on which guy and it was sort of mixed, and [Friday] I just decided he had only played half a game in Winnipeg and to give him the back-to-back."