Blending the limts of an aimoffset?

Hey there! Anybody knows how to blend the ends of a Blendspace?
So i have a 1D Aimoffset, and its left-right limits ( -90 and 90 ) have the character looking in 180 degrees opposite. Now, i also have a 90 degrees turn in place, that works well. Also, i have a top-down mouse position-oriented character.
Problem is that when i turn quickly, my aim offset jumps from -90 to 90, making my character twitch nasty.
Now, what solution should i apply here? I was thinking of blending the limits of the aimoffset together so that it will smoothly flow, but i have no idea how to do that :frowning:
Thanks!