Place the rice noodles in a large bowl and cover with very hot water, soaking for 10-15 minutes until tender but firm, then drain.
In a small bowl, whisk together the tamari, fish sauce, coconut sugar, lime juice, and red pepper flakes to create the sauce.
Heat the avocado oil in a large wok or non-stick skillet over medium-high heat.
Add the minced garlic and shrimp to the pan, sautéing for 2-3 minutes until the shrimp are pink and opaque.
Push the shrimp to one side of the pan and crack the egg into the empty space, scrambling it quickly until just set.
Add the drained noodles and the prepared sauce to the pan, tossing everything together for 1-2 minutes until the noodles are well-coated and hot.
Stir in the bean sprouts and sliced green onions, cooking for just 30 seconds to retain their crunch.
Serve immediately topped with crushed peanuts and an extra squeeze of lime if desired.