Melt 2 tablespoons of the butter in a medium (10-inch) saute pan over medium heat. Add the scallions and corn and saute for 3 minutes, or until softened. Add the lobster and cook for 1 minute. Set aside.
Combine the flour, baking powder, paprika, Old Bay seasoning, and 1 teaspoon salt in a large mixing bowl. Make a well in the center and whisk in the eggs and half-and-half, stirring until the mixture is smooth, like a thick pancake batter. Stir in the corn and lobster mixture. (The batter may be made up to an hour ahead and refrigerated.)
For the sauce, place the garlic, saffron, sriracha, lemon juice, mayonnaise, 1/2 teaspoon salt, and 1/4 teaspoon pepper in the bowl of a food processor fitted with the steel blade and puree until smooth.
To make the fritters, heat 2 to 3 tablespoons of the butter in a large (12-inch) saute pan over medium to medium-high heat. For each fritter, drop 2 rounded tablespoons of the batter into the hot butter and cook for 2 to 3 minutes on each side, until golden brown and firm to the touch. Don’t crowd the skillet or they won’t brown evenly. Repeat until all the batter is used, adding butter as necessary. Serve the fritters hot with a dollop of sauce on the side.