That encounter summed up the trainer fling: not a polished exploit but a messy, human-shaped reminder that the game’s systems interact in strange, sometimes beautiful ways when pushed beyond their design. Modders and trainer creators use external programs to modify stats, movement, and animations. Many trainers enable harmless tweaks — infinite ammo in solo, visual tweaks for videos — but the same tools can cause chaos in multiplayer if misused. When those external inputs desynchronize client and server, the character model can “fling” through physics, teleport, or vanish entirely before reappearing with impossible kills.