The odds of an explosive decompression in the cockpit are about 1/billion or even more. If that did happen then you'd have 10 seconds consciousness, BUT you'd probably die from frostbite, as well as your top lips being ripped off and your lungs exploding as 900kph wind hits them, plus you wouldn't be able to see anything anyway.. but a "normal" explosive decompression somewhere on the plane would still take a long time to suck out all the air, so the 10 seconds isn't really accurate and you would have plenty time to don your mask and get the old Captain and Co-Pilot to hurry back into the cockpit for any help you may need...
I'm pretty sure a SO can work out how to descend the plane without ripping the wings off her