Seems like this is a different angle of the video we have seen before. That would also mean that the information I got before was incorrect, because this video quite clearly shows the extraction of the eel from the stomach of the patient, and not the ass as previously believed.
That however makes it all the more bizarre – how did the full size, unchewed eel get into a human stomach? Did it indeed chew its way in the through the ass?
Props to Best Gore member @13lunt420media for the video: