In Part I, we only display the cases where only one of Red 3,4,5 is cutting. The reality can be more complicated.
Let's suppose that Red 3 is now going deep and Red 5 is cutting up-field.
Remind that we are not in a man-man defense, which means everyone is defending an area rather than a specific player. If Red 3 continues cutting down-field, Red 3 will eventually leave Blue 3's territory and rush into the space guarded by Blue 5. Correspondingly, Red 5 is rushing towards the space defended by Blue 3. At this time, Blue team needs to quickly read the situation. Blue 3 should stop chasing Red 3 and focus on Red 5. Similarly, Blue 5 should turn to Red 3 in case of a big huck from Red 2.
At this time, the stalling count might have been 4 or 5. Then, as Red 3, 4, 5 are all closely guarded, Red 2 needs to swing the disc to Red 1 to reset the stalling count. At the moment, Blue 1 puts a lot of pressure to Red 2's throw, making sure that Red 1 is unable to catch the swing unless he/she step back to the safe field behind. In the meantime, Blue 2 step a few steps back in case that Red 1 gains a transient opportunity for an immediate forward-pass.
During the swing, Red 3, 4, 5 will not stop their paces. Suppose that Red 3 cuts back after the deep cut attempt is frustrated. Then, as the deep field is open again, Red 4 seeks the opportunity to go for the second deep cut. Red 5 is both clearing out the left side for Red 3, and attacking the right area. How may the blue team organize their defense? Right! Blue 3 turns back for Red 3, Blue 4 blocks Red 5, and Blue 5 chases Red 4. In the meantime, Blue 1 set his force-middle mark, preventing Red 1 from throwing to the left. After all these demonstrated plays, the blue team maintain the initial form, keeping everyone's relative location unchanged
There is a possibility that the disc is throwed to the center of the crowd by a high-release, a hammer or a blade. In this case, the disc's trajectory will be a large parabola going downwards, and it will take relatively longer time before the disc reaches the cutter. If this happens, everyone near the disc should go for it.
Let's reset the position. What displays now is the initial positioning, symmetric to that we see in Part I.