yes, I too am completely stuck at this point. Have swung over into this area via 3 grapple beams and the door is locked and there is seemingly nothing to do here and no way back due to a high wall blocking the grapple beams.
My friend got hit with this to last night. One fix I heard about was forcing the game to load in someway but im not sure if this works or how to do it. --- The beginning of everything and the end of nothing.