D4 leaves O4 in the stack and steps into the open side lane, between the disc and the space in front of the stack.
O3 cuts under to the open side, with D3 a step behind. D4 is standing in the throwing lane, so O1 holds the disc.
O1 resets to O2, the dump, and D2 takes the mark. O3 clears downfield, and D4 runs back to O4, the next cutter.
O4 cuts under toward O2. D4 is back in time and stays on O4's shoulder through the cut.
Both cuts are covered and O2 still has the disc. D4 can look for the next lane to help in.