Heat oven to 450. Lightly spray a small casserole dish, set aside. In small skillet, over med-high heat, add oil, then garlic. Cook, stirring, until browned, about 2 mins.
Place garlic in medium bowl. Add mayonnaise, celery, green onion, lemon juice, parsley, horseradish, mustard, thyme and red pepper flakes. Mix well. Lightly fold in crabmeat. Season w/ salt and pepper to taste.
Spoon crabmeat mix into casserole dish. bake about 15 mins, or until light brown. Serve w/ crisp bread rounds, crackers and cut veggies.