He does land it clean, the winning run is in the first half of the video, starting at 0:53, he only did a hand touch on the second double. For some reason there is another attempt at the end of the video which is more sketchy and he sits down on.

“Shaun White winning the Swatch TTR New Zealand Open 2009 Halfpipe Finals. This is the best halfpipe run ever performed. Frontside lien air, to backside 900 melon, followed by a frontside 1080 stalefish, into a Cab double cork 1080 stalefish, to frontside double cork 900. If you doubt that shaun white is the best pipe boarder in the world then watch this clip and be amazed! “