A right angle is 90 degrees. so on collision have it set the angle.
Collide with sprite------> set angle: Choose (-90+Self.angle,90+self.angle)
That will randomly pick weather to veer left or right and keep a localized orientation. It will clamp it to a 90 degree turn left or right.
Also change the sprites collision polly , and make it more sphere like, it will make so it will bounce more like a ball. Not sure about C2 but most physics engines support a simplified collision. You can choose Collision poly, box, circle, pill. If C2 uses this, then it is better to use.