cut off anything below the bend.. it'll never keep up... even if you train it to keep up, it'll be a diminished cola.
i once tried to salvage them before.. tied them up so they kept up with growth.. was basically level with canoy... stems (vascular tissue) were smaller, buds were smaller... just ends up a waste of space compared to growing out some other portion to fill it in same amount of time invested in these lower branches.