White, who will bid to defend the Olympic halfpipe title he has won twice in a row at Sochi 2014 and also take the first ever slopestyle gold, placed third in the men's competition in Colorado.
He scored 90.75 but was flying a lone flag as Europe dominated both the men's and women's competitions with Sandbech victorious with 97.00 and Torstein Horgmo second with 94.75.
That completed a Norwegian one-two while in the women's slopestyle Czech Sarka Pancochova took her second World Cup win but first in the discipline after scoring 92.25 on her second run.
Swiss duo Isabel Derungs and Elena Koenz were both well off with 81.50 and 81.25 respectively for second and third with the next World Cup to be staged in Stoneham in the middle of January.
And Sandbech was pleased to get one over double Olympic champion and multiple X Games winner White but admits the result will have no bearing on the outcome in Sochi.
"I didn't plan to do the 1440. It just happened due to the speed. I just went for it. The level of riding is very high with all the tricks people are doing right now," he said.
"In Sochi, it will be all about putting together the biggest tricks into one good run. It feels great beating Torstein and Shaun.
"It's something I always wanted to do. It would be nice if we would have some champagne as I would love to spray down on them."
© Sportsbeat 2013