Make the damping harder and maybe even raise the front tire pressures if possible.
If I understand correctly, you don't like it when the car wants to grip too much when it is riding on a curb while in a corner? If it strikes the bump/curb pretty hard and the car gets a violent reaction to which it wants to steer MORE, you'd think making the car absorb it would solve it, but if you make the car absorbent it will squash itself down on the track causing the camber degrees to increase rapidly. Keep the car ridgid, and make the damper slower, and if you have a rebound setting, make that quicker. Depends what stiffness you are using and how much camber is already set on the car.
If you are driving on a curb and the car just wants to pull in too much, that may not even be the front end's fault, but your differential setting and/or how your suspension is balanced allowing the diff to wind up when the car rolls irregularly. Noticeable on the UF1 and some of the GTR cars like the FZR.
What car are you using anyways?