Skyrim fans know just how ridiculous things can get when mods and glitches are thrown into the mix as the game's physics engine and graphics system can go haywire. Conflicting processes in Skyrim due to mods or glitches can sometimes be game breaking, but most of the time they are simply shocking and hilarious without actually being detrimental to the playthrough.
Veteran players of the game know that because so many things can be happening at any given moment, sometimes conflicting actions in Skyrim can have unforseen and fascinating results. This isn't the result of a glitch or a mod of any kind, but simply the result of two lines of code happening at the same time when they shouldn't be, happening at different times when they should be occurring simultaneously, or some other similar mix up.
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The video below, however, shows what happens when a mod (or player-made code modification) interacts particularly bizarrely with a cutscene. Redditor BigFrog200 posts the clip that shows the opening cutscene that all Skyrim fans recognize going horribly wrong as the decapitated NPC rises from the execution block and starts attacking the Imperial Guards. The scene is supposed to be Skyrim's introduction to Ulfric and the Stormcloak rebellion, but it ends up being a shocking fight to the death between a headless prisoner and the Imperial Guards.
The comments section in the post talks about the different possible mods that could be causing this effect, as Skyrim's mods are numerous and diverse. Whatever the case, it seems that a mod is causing the NPC to become fully untethered the moment that he is decapitated, allowing him to then go into combat mode and fight his
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