Soak the brown rice noodles in a bowl of hot water for 10 minutes until tender but firm, then drain.
In a small bowl, whisk together the tamarind paste, coconut aminos, fish sauce, and red pepper flakes to create the sauce.
Heat the avocado oil in a large skillet or wok over medium-high heat and sauté the minced garlic for 30 seconds until fragrant.
Add the shrimp to the skillet and cook for 2 minutes per side until they turn pink and opaque.
Push the shrimp to the side of the pan, crack the egg into the center, and scramble quickly until just set.
Add the drained noodles, the prepared tamarind sauce, and the bean sprouts to the skillet.
Toss all ingredients together for 2 minutes over high heat until the sauce is well-distributed and slightly thickened.
Transfer to a plate and garnish with sliced green onions, crushed peanuts, and a fresh lime wedge.