Place garlic cloves in a food processor, and process until minced.
Add ginger, cumin, curry, and red pepper, and process until blended.
Add peanuts and hot water, and pulse until well-blended, scraping sides of bowl occasionally.
Cut pork crosswise into 1-inch slices.
Place each piece between 2 sheets of heavy-duty plastic wrap; flatten each piece to 1/2-inch thickness using a meat mallet or rolling pin. Coat pork with cooking spray.
Heat a large nonstick skillet over medium-high heat.
Add pork; saut 2 minutes on each side or until browned.
Place pork in a shallow bowl.
Add soy sauce and 2 tablespoons water to pan, scraping pan to loosen browned bits.
Add soy sauce mixture to pork; keep warm.
Add onion to pan; saut 3 minutes.
Add 1/4 cup peanut mixture; cook 4 minutes. Stir in 1/4 cup water, coconut milk, sugar, salt, and black pepper. Return pork mixture to pan; bring to a boil. Reduce heat; simmer 1 minute.