Place the brown rice noodles in a bowl of very hot water and soak for 10-15 minutes until softened but still firm, then drain.
In a small bowl, whisk together the coconut aminos, tamarind paste, lime juice, and fish sauce until the sauce is smooth.
Heat the avocado oil in a large wok or skillet over medium-high heat and add the minced garlic and red pepper flakes.
Add the shrimp to the pan and cook for 2-3 minutes until they turn pink and opaque, then push them to one side of the skillet.
Crack the egg into the empty side of the pan, scramble it quickly until set, and then mix it into the shrimp.
Add the drained noodles and the prepared sauce to the pan, tossing vigorously for 2 minutes until the noodles are well coated and heated through.
Fold in the bean sprouts and sliced green onions, cooking for just 30 seconds to maintain their crunch.
Season with sea salt and serve immediately topped with crushed peanuts and an extra lime wedge.