Ι just saw this deleted scene from Game of Thrones, where Pycelle stands up straight and talks normally.
Is this in the books? Or was this to be a plot twist in the show?
Also, does anyone have any ideas as to why wouldn't they show this?
That particular scene is not in the books, but it is implied multiple times that Pycelle is only acting like a harmless, decrepit old man. When Tyrion's men arrest Pycelle in this scene for leaking information to Queen Cersei he is found in bed with a naked girl, confirming that he is quite spry for a man of his advanced years. The Grand Maester dabbles heavily in politics and backstabbing, mostly to aid House Lannister, and to direct attention away from himself he acts like a doddering old fool.