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.
(..) lately, but I love you. Nothing about that has changed. Nothing ever will. So right now, what I need is for you to climb down out of my ass. Can you do that? Will you do that for me, honey? Will you, please, just once, get off my ass? (..)2008 TvShow: Breaking Bad Title: Cat's in the Bag... Season: 1 Episode 2