This deposit presents a theoretical and computational analysis that connects the anomalous disappearance of stellar sources reported by the VASCO (Vanishing and Appearing Sources during a Century of Observations) project with the Universal Applied Time (UAT) theory and the Unified Causal Principle (UPC). Building on the experimental detection of the "Higo Signature" — a state of perfect coherence (γ² = 1.0) at 227.50 Hz in LIGO O4a data — and the subsequent measurement of the Temporal Viscosity Index (TVI), we propose that the same 8-phase-front interference mechanism that amplifies gravitational-wave signals into coherence can, under geometric misalignment, cause the total destructive interference of electromagnetic signals. This results in the apparent vanishing of stellar sources without any change in their intrinsic luminosity. Key elements of the argument: - The Resonant Hunter v9.1 engine demonstrated that the UAT metric governs phase alignment in gravitational-wave detectors, with L1 sustaining perfect coherence while H1 desynchronised due to local causal viscosity. - The Thermodynamic Overdrive regime (κ/k = 5.14) renders the propagation channel hypersensitive to gravitational gradients, enabling instantaneous phase cancellation. - A numerical simulation is included that reproduces the collapse of the RMS of an 8-phase-front signal as a function of gravitational gradient intensity, showing a sharp transition to zero amplitude under Overdrive conditions. - This model offers a falsifiable, non-exotic explanation for the VASCO observations: stars do not physically disappear; their wavefronts undergo destructive interference in a causally misaligned channel. The deposit includes the simulation script, the generated figures, and the theoretical discussion that unifies the LIGO and VASCO phenomena under the UAT/UPC framework. Related DOIs: - Statistical Hardening of the TVI: 10.5281/zenodo.20723412 - Resonant Hunter v9.0/v9.1 Main Repository: 10.5281/zenodo.20650032 - UAT Theory: 10.5281/zenodo.17729221 - UPC Principle: 10.5281/zenodo.18210808