My GameObject remains inGame but is destroyed in the editor (no GameObject on left side/in hierarchy)

An enemy is spawned after trigger is activated, he then rushes towards the player and the camera focuses its gaze on it. After destroying everything works fine, except the GameObject (which is deleted in the editor) is still glitching around upon my player...

Also, I'm getting a Refrence error although the camera stuff is working fine :

NullReferenceException: Object reference not set to an instance of an object ForceGaze.SetCam () (at Assets/Scripts/ForceGaze.js:10) ForceGaze.Update () (at Assets/Scripts/ForceGaze.js:19)

And here's my code where I guess something has to be wrong...any ideas? :) All done in Javascript btw.

ForceGaze.js:

 var camLookAt : Transform;
 var cameraUsed : Camera;
 var Haunt : GameObject;
 
 
 function SetCam()
 {
     if(PlayerSpawnTrigger.spawning == true)
     {
         camLookAt.position = GameObject.FindWithTag("Haunt").transform.position;
     }
 }
 
 
 
 function Update()
 {
 
     SetCam();
 
     if (GazeChecker.ForceGaze == true)
     {
         cameraUsed.transform.LookAt (camLookAt);
     }
 
 }
 
 
 

HauntSpawner.js:

 var Player : Transform;
 var spawnSound: AudioClip;
 
 var MinSpawnPos : float = 5;
 var MaxSpawnPos : float = 25;
 var EnemyPrefab : GameObject;
 
 var MinEnemies : int = 1;
 var MaxEnemies : int = 1;
 var HowManyToSpawn : int = 1;
 
 static var functionActivated = false;
 
 
 function Update()
 {
     ///Spawn enemy on Trigger///
     if(PlayerSpawnTrigger.spawning == true && functionActivated == false)
     {
         Spawn();
     }
 }
 
 
 
 function Spawn()
 {
     var dist : float = Vector3.Distance(Player.position,transform.position);
 
     if(PlayerSpawnTrigger.spawning == true)
     {
         GetComponent.<AudioSource>().PlayOneShot(spawnSound);
 
         var position: Vector3 = Vector3(Random.Range(MinSpawnPos, MaxSpawnPos), 3.2006, Random.Range(MinSpawnPos, MaxSpawnPos));
 
         HowManyToSpawn = 1;
 
         for(var i = 0; i < HowManyToSpawn; i++)
         {
             HauntClone = Instantiate (EnemyPrefab,position,Quaternion.identity);
             HauntClone.tag = "Haunt";
         }
 
         functionActivated = true;
 
     }
 }
 

HauntMoving.js:

 var Player : Transform;
 var MoveSpeed = 4;
 var MinDist = 1;
 var MaxDist = 15;
 
 
 function Update()
 
 
 {
     ///Moves toward Player////
 
     transform.LookAt (Player.position);
 
     var dist = Vector3.Distance(transform.position,Player.position);
 
     if(dist <= MaxDist)
     {
         transform.position += transform.forward * MoveSpeed*Time.deltaTime;
     }
 
     if(dist <= MinDist)
         {
             
             Destroy(GameObject.FindWithTag("Haunt"));
             PlayerSpawnTrigger.spawning = false;
 
         }
     if(PlayerSpawnTrigger.LeftTriggerZone == true)
     {
         Destroy(GameObject.FindWithTag("Haunt"));
     }
 
 }
 

Thanks you for any help!