Depending on how the rest of the limb is shaped what you described is a reflexed bow with the limbs bending towards the back. My idea of a gull wing is reflexed off the handle then deflexes through the limb and reflexes again at the tips, aka a 5 curved bow.
With 6" of reflex in a bow you can over strain the wood just getting it to brace. If it were mine I'd re-steam it and add 3" to 4" of reflex, give it a day or two to rehydrate then temper the belly on the form to set the correction.