is there a way to control the angel around the y axis that a character controller will follow at 90 degrees to the normal’s
You can’t rotate a characterController, but you can do this pretty easily with a rigidBody player and AddForce.
The picture helps a little, but your description of the problem is terrible. Please edit your question to actually tell us the current behaviour and the desired behaviour. All I could glean from your image is that you want the character controller to stand at an angle that is perpendicular to the surface normal.
As stated, in the other answer, this is not how the character controller works. For orienting to the hit normal of a surface, take a look at this excellent answer by Aldo : Orient vehicle to ground normal (terrain hugging) - Questions & Answers - Unity Discussions