Space ship controls locking into place

Hello, all. I have the most unusual problem of my space ship control script locking into a rotation and not allowing any input when it reaches the maximum y angle. All help would be appreciated. Here's my code:

 var minSpeed : float;
 var maxSpeed : float;
 var maxAngles : Vector2;
 var breakKey : KeyCode;
 var accelerateSpeed : float;
 var breakSpeed : float;
 var rotateSpeed : float;
 private var curSpeed : float;
 
 function Awake ()
 {
     curSpeed = minSpeed;
 }
 function Update () 
 {
     if(Input.GetKey(breakKey))
         curSpeed -= Time.deltaTime * breakSpeed;
     else
         curSpeed += Time.deltaTime * accelerateSpeed;
     curSpeed = Mathf.Clamp(curSpeed, minSpeed, maxSpeed);
     
     rigidbody.velocity = transform.forward * curSpeed;
     
     var targetAngleX : float = transform.eulerAngles.x + Input.GetAxis("Vertical") * maxAngles.x;
     var angleX : float = Mathf.MoveTowardsAngle(transform.eulerAngles.x, targetAngleX, rotateSpeed * Time.deltaTime);
     
     var targetAngleY : float = transform.eulerAngles.y + Input.GetAxis("Horizontal") * maxAngles.y;
     var angleY : float = Mathf.MoveTowardsAngle(transform.eulerAngles.y, targetAngleY, rotateSpeed * Time.deltaTime);
     
     var targetAngleZ : float = Input.GetAxis("Horizontal2") * 180;
     var angleZ : float = Mathf.MoveTowardsAngle(transform.eulerAngles.z, targetAngleZ, rotateSpeed * Time.deltaTime);
     
     transform.eulerAngles = Vector3(angleX, angleY, angleZ);
 }