Cook pasta according to package directions, omitting salt and fat. Drain; keep warm.
Cut pork crosswise into 4 pieces; cut each piece in half lengthwise. Slice each half into thin strips.
Heat a large nonstick skillet over medium-high heat. Coat pan with cooking spray. Add olive oil. Add pork, salt, thyme, pepper, and mushrooms to pan; sauté 4 minutes or until pork is desired degree of doneness and mushrooms are tender. Remove from heat.
Combine water, flour, and Worcestershire sauce in a medium bowl, stirring with a whisk until smooth. Stir in sour cream. Add sour cream mixture to pan, stirring to combine. Return pan to medium-high heat. Bring to a boil; cook 1 minute or until sauce thickens, stirring constantly. Serve the pork mixture over noodles; sprinkle with parsley. Serve immediately.