Scene Context: After the stasis shell is removed, Les's severed legs begin hemorrhaging massively in the local 0.38G. Upon transitioning to zero G, the pneumatic tourniquets and coagulants finally manage to take effect.
Essence of the Phenomenon: Gravity creates a hydrostatic gradient in bodily fluids. In microgravity, this column disappears, meaning blood and other fluids no longer "fall down" but pool into free-floating spheres. This does not mean bleeding magically stops—arterial blood pressure remains—but the additional gravitational component that actively pulls blood out of an open wound in a localized field is removed. Thus, transitioning to zero G does not heal Les; it merely eliminates one vector of rapid blood loss, buying a few critical seconds for the tourniquets and coagulants to work.
Current Limitations: Zero gravity is not a hemostatic agent. Without mechanical vascular compression and chemical clotting control, a person would still bleed to death in weightlessness.
Theoretical Extrapolation: The model assumes the advanced xEMU features rapid-response pneumatic tourniquets, and medical drones can instantaneously inject powerful coagulants directly into the trauma zone.