His statement is seen as an attempt to 'climb down' [='back away'] from the strong denial he made yesterday.
a 'climbing plant' [=a plant that attaches itself to something, such as a wall, as it grows up it]
The players 'climbed' into their uniforms [=put on their uniforms] and headed for the field.
(..) The Three-Eyed Raven sent for me. The Three-Eyed Raven's dead. Now he lives again. When I last saw you, you were a boy. A fearless boy. Loved to climb the castle walls, frighten his mother. Who are you? Uncle Benjen. The last letter Jon wrote me said you had been lost beyond the Wall. (..)2016 TvShow: Game of Thrones Title: Blood of My Blood Season: 6 Episode 6