Return to the origin of rotation

Hi,

I am trying to modify a script I found, This script is for rotate an object and works well, but I want to add the function of return to the origin of rotation after 2 seconds of inactivity.

Please any advice is more than welcome!

Thanks

// Moves object according to finger movement on the screen

var speed : float = 0.1;
var rotationStart = 0.0;
var rotatehome = false;
var rotationSpeed = 10;


function Awake ()
{
    transform.Rotate(rotationStart,0,0);
}
 
function Update () {
    
    if (Input.touchCount == 1 && Input.GetTouch(0).phase == TouchPhase.Moved) {
        
        // Get movement of the finger since last frame 
        
    var touchDeltaPosition:Vector2 = Input.GetTouch(0).deltaPosition;

        // Move object across XY plane 
    
    transform.Rotate (0,-touchDeltaPosition.x * speed, 0);
 
    rotatehome = false;    
    }
     else if (rotatehome)
   {
    transform.rotation = Quaternion.RotateTowards(transform.rotation, new Quaternion(0,0,0,0.1), rotationSpeed);
    }
    }  

   function Return()
{
    yield WaitForSeconds (0.5);
    rotatehome = true;
}

var rotationSpeed = 10;
var rotationStart = 0.0;
var rotatehome = false;
var timer : float =0;
var fingeroff : boolean;
function Awake ()
{
transform.Rotate(rotationStart,0,0);
}

 function Update () {
          
     if (Input.touchCount == 1 && Input.GetTouch(0).phase == TouchPhase.Moved) {
  
         // Get movement of the finger since last frame 
          
         var touchDeltaPosition:Vector2 = Input.GetTouch(0).deltaPosition;
 
         transform.eulerAngles.y = (transform.eulerAngles.y - Input.GetAxis("Mouse X") * rotationSpeed);
 
         timer = 0;
 
         rotatehome = false;

	fingeroff = false;
     
	}else{

     if (Input.touchCount == 1 && Input.GetTouch(0).phase == TouchPhase.Ended)
	{
	fingeroff = true;
	}
	}
	
 
     if (rotatehome)
     {         
         transform.rotation = Quaternion.RotateTowards(transform.rotation, new Quaternion(0,0,0,0.1), rotationSpeed);
     }
      
 }
 function FixedUpdate()
 {
     if (fingeroff ==true){
     timer += 1 * Time.deltaTime;
     }
     
     if (timer >= 5){
	rotatehome = true;
	}
 }