When I was little I used to watch horror movies with my mom.  This would be in the late 80s to early 90s.  This may have been a film or a made for TV movie.

I remember this scene involving a demon imprisoned  under the floor  within a basement of a cathedral.  I remember it was being mentioned that the demon had once a been a priest.  I know it wasn’t “The Church” (1989) which had a similar premise and involved an architect that had died in the church he had designed.  This wasn’t it.

I remember the demon in question, emerging from  a trap door in the floor.  It was huge, and gory, with long horns – much like a minotaur. I remember the camera focusing down on this mass of bloody tendrils/intestines that trailed across the stone floor as the creature walked.  I vaguely remember that it was going after a woman who was trapped with it, and that the creature was defeated by decapitation.

This scene has been bugging me for a while.  Maybe someone here might know where this is from.