Harrison Barnes had 13 points, Carl Landry added 10 and Andrew Bogut had six points and 11 rebounds.
After scoring 44 points in the opener, Curry's total was cut in half as he shot 7 for 20 from the field.
"I thought it was polite of (Curry and Thompson) to at least take turns and not both be on fire on the same night," Popovich said. "Maybe the next iteration (of that) will be neither one of them will be hot in Game 3, that's what I'm hoping."
The Warriors host Game 3 on Friday night and Game 4 Sunday.
"It changed the whole dynamic of the series and we honestly have the best home court in the NBA," Thompson said. "They're the greatest crowd I ever played in front of. To go back 1 and 1 and give them a show on Thursday or Friday, I'm getting jitters already thinking about it. To go back with a split and potentially go up 3-1 is everything for us."
The double-overtime victory game appeared to leave San Antonio drained in the first half, while the Warriors were energized.
After missing his first two attempts in the series opener, Curry opened Game 2 with a pair of 3 pointers, one over a charging Duncan. He finished with 11 points in the quarter, going 3 for 4 from the field and 2 for 3 on 3s. He was limited to 9 minutes after picking up two fouls.
Curry's second 3 sparked a 14-6 run that gave Golden State a 17-12 lead. He had eight points in the run and Thompson added five.
San Antonio went on an 8-2 run to pull within 46-39, forcing a 3-second call on Golden State's defense and a pair of missed shots.
The Spurs focused their defense on Curry in the first half to varying success.
Curry did not score in the final 10 minutes of the first half, but his drives drew the defense and freed his teammates for open jumpers. He was credited with only two assists in the quarter, but his presence helped Golden State outscore San Antonio 30-24.
Thompson hit consecutive 3s sandwiched around three missed 3s by Danny Green to give the Warriors a 52-39 lead.
Thompson went 7 for 8 on 3s in the first half and was 11 for 18 overall, while being defended by Green and Leonard.
"It was amazing," Curry said. "The shots he was hitting, to go 8 for 9 in a game from the 3-point line in the playoffs is just unheard of. He was just aggressive. He was confident in every shot he took. He was just feeling it. You ride a guy that's feeling that hot, especially when he's in rhythm."
The Spurs went on a 16-4 run to pull within 79-72 with 1 minute left in the third quarter.
Bogut, a 50 percent free-throw shooter during the regular season, was 2 for 4 at the line after being intentionally fouled.
NOTES: Spurs F Aron Baynes and G Nando De Colo were both inactive. . Duncan is the career playoff leader in defensive rebounds with 1,708. . Rookies started 122 games for Golden State this season. No other playoff team has had its rookies start even 20 games. . Curry was averaging a league-high 12.3 points in the third quarter entering Wednesday. He was held to 3 points in Game 2.