Cook the pasta al dente according to the package directions. Drain and keep warm.
While the pasta is cooking, heat olive oil in a large pan over medium heat. Add the scallions, garlic, chili flakes, and season to taste with salt and pepper. Cook for 2-3 minutes, stirring occasionally until the garlic becomes fragrant.
Add the corn, white wine (or vegetable stock), and coconut milk to the pan and simmer for 2-3 minutes until the corn is tender.
Add butter to the sauce, and once it is mostly melted, gently fold in the crab, taking care not to break it up too much. Continue heating until the crab is heated through and the butter nicely coats everything.
Add the pasta, lemon juice, Parmesan, and half of the parsley to the pan. Stir gently to mix everything together, and adjust the seasoning if necessary.
Garnish with the remaining parsley. Serve with fresh crusty bread and a garden salad. Enjoy!