rotating objects around collider axis

so i have a collider and i use this script to make rigidbodies to get pulled to it and rotate around it for my tornado. but a problem im having is the tornado releasing objects it picks up. so i wanted to tilt the collider (capsol collider sideways to create a sidways rotation which would pick objects up then smash them into the ground forcing them away therefore releasing them. but the problem im having is taht when i rotate the collider it still rotates other objects the same. so i was wondering what to add to theis script so that if i attatch a collider it will roatate around the colliders y axis, so even if i tilt the collider it will rotate the way it rotates aswell. hopefull that makes sence. here is the script i attach to the collider.

private GameObject PullOBJ;
public float PullSpeed;
public float objRotationSpeed;
public float rotation;
public float PullStrength;
public void OnTriggerStay (Collider coll)
	if (coll.gameObject.tag == "Untagged") {
		PullOBJ = coll.gameObject;

		PullOBJ.transform.position = Vector3.MoveTowards (PullOBJ.transform.position, this.transform.position, PullSpeed * Time.deltaTime);
		PullOBJ.transform.RotateAround (transform.position, Vector3.up, Time.deltaTime * rotation);
		PullOBJ.transform.Rotate (Vector3.left, 45 * Time.deltaTime * objRotationSpeed);


The collider’s y-axis is PullOBJ.transform.up and your tornado’s y axis would be transform.up(Considering the script is on tornado)