Issue with adding force and lerping position? Possible unity bug?

The Bouys in my boat game aren't acting correctly when shot. When the rigid body is normally pushed by another rigidbody it will be pushed, and due to t$$anonymous$$s script:

 using UnityEngine;
 using System.Collections;
 
 public class buoyScript : MonoBehaviour {
 
     Vector3 startPos;
     public float bounceBack = 0.5f;
 
     // Use t$$anonymous$$s for initialization
     void Awake () {
         startPos = transform.position;
     }
     
     // Update is called once per frame
     void FixedUpdate () {
             transform.position = Vector3.Lerp (transform.position, startPos, bounceBack);
     }
 }
 

And t$$anonymous$$s script for the shots:

 using UnityEngine;
 using System.Collections;
 
 public class shotScript : MonoBehaviour {
 
     public float shotVel = 10;
     public float $$anonymous$$tVel = 10;
 
     public int shotDam = 0;
 
     public string tarTag = "Enemy";
 
     public Rigidbody2D RB;
 
     // Use t$$anonymous$$s for initialization
     void Start () {
         RB = gameObject.GetComponent<Rigidbody2D> ();
         RB.velocity = shotVel * transform.up;
     }
 
 
     void OnTriggerEnter2D(Collider2D col){
         
         if (col.tag == tarTag) {
             col.gameObject.SendMessageUpwards ("hurt", shotDam);
         }
 
         if(col.gameObject.GetComponent<Rigidbody2D>() != null){
             var colRB = col.gameObject.GetComponent<Rigidbody2D> ();
             colRB.AddForce ($$anonymous$$tVel * transform.up, ForceMode2D.Impulse);
         }
 
         Destroy (gameObject);
     }
 }
 

Here is a video of the behavior as an example.

Notice how the boat can push the bouy and it will bounce back as programmed, but when shot it will cause it to not bounce back until the bout touches it again. The boat never sends any message to the bouy upon touch, all t$$anonymous$$s is done by the bouy script and unity's built in rigidbody system, the only exception to that is the shot. Even weirder is the fact that the particles act correctly to the bouy after being shot, but the boat collides with it at a different area, showing that where the rigidbody believes the collider is, and where the collider actually is are at two different locations.