Below is the video link the photo is from. Looks like the mud approached from behind the building & hanger. Holding short of the apron, and several aircraft.

"Video of fighter jets in mud... " http://www.youtube.com/watch?v=XBGFwu9G4UA

"Rather than being proud of its stealth and targeting, the authors should be embarrassed at their amateur approach to hiding the payload. I really hope it wasn’t written by the USA because I’d like to think our elite cyberweapon developers at least know what Bulgarian teenagers did back in the early 90′s," Lawson said.

"Stuxnet Authors Made Several Basic Errors" https://threatpost.com/en_us/blogs/stuxnet-authors-made-several-basic-errors-011811

"Sure, there are your standard routines for hiding from AV tools, XOR masking, and installing a rootkit," he blogged.
"But Stuxnet does no better at this than any other malware discovered last year. It does not use virtual machine-based obfuscation, novel techniques for anti-debugging, or anything else to make it different from the hundreds of malware samples found every day."

"Stuxnet worm is full of embarrassing errors" http://www.theinquirer.net/inquirer/news/1938293/stuxnet-worm-embarrassing-errors

At least the pilot didn't get angry, and choose to exit the aircraft via the ejection seat.