Disabling CCK cache (D5)

I have a customized version of the nodereference module that allows the user to be able to dynamically attach more than 3 node references to each node without requiring a page save and edit. I have been able to get the module working except for the fact that drupal seems to overwrite the values inserted into the database for that added node reference. That is, Drupal is storing the inital value of $delta and not reading the "content_field_field_name" for recently added values.

I tried disabling the cache by doing $GLOBALS['conf']['cache'] = FALSE; and cache_clear_all('cck_dynamic_nodereference', 'cache', TRUE); in hook_init() function. Inspite of adding this drupal still overwrites the ajax call added values. The only way that I have been able to get drupal to persist the ajax call added values is by running devel module's "Empty Cache" before doing Preview/Submit on the node.

This is the function that handles the ajax requests:

function cck_dynamic_nodereference_init() {
  $GLOBALS['conf']['cache'] = FALSE;
  cache_clear_all('cck_dynamic_nodereference', 'cache', TRUE);
}

function cck_dynamic_nodereference_response() {
   
  header("Cache-Control: no-cache, must-revalidate");
  header("Expires: Mon, 30 Jul 1984 05:00:00 GMT");

  $nid         = $_REQUEST['nid'];
  $vid         = $_REQUEST['vid'];
  $delta       =  $_REQUEST['delta'];
  $field_value = $_REQUEST['field_value'];
  $field_name  = $_REQUEST['field_name'];
  
  $field_column_name  = 'field_' . $field_name . '_nid';
  $field_table_name   = 'content_field_' . $field_name;
  
  db_query("insert into {". $field_table_name ."} (vid, delta, nid, ". $field_column_name .") values (%d, %d, %d, %d)", $vid, $delta, $nid, $field_value);
  
  $ajaxOutput         = "some output from here.... Success !!! with values--> $nid, $vid and $field_table_name and $field_column_name";
  $ajaxOutput         = drupal_to_js($ajaxOutput);

  echo $ajaxOutput;
  
}

The code for the ajax call

Drupal.CCKDynamicNodereference.commitNewNodeReference = function(delta) {
	  nid = $('#node_nid').html();
    	  vid = $('#node_vid').html();
    	  field_value = $('#cck_dnr  select:eq('+delta+')').val();
    	
    	  previous_select_name = $('#cck_dnr  select:eq(0)').attr('name');
    	  previous_select_name_end = previous_select_name.lastIndexOf("0");
    	  previous_select_name_end = previous_select_name_end - 1;
    	  field_name = previous_select_name.substring(6, previous_select_name_end);
    	 
    			$.ajax({
    					method: "get",url: "/cck_dynamic_nodereference/response/",
    					data: "vid="+vid+"&delta="+delta+"&nid="+nid+"&field_value="+field_value+"&field_name="+field_name,
    					dataType: 'json',
    					success: function(data){ 
    					console.log('data returned successfully '+data);
    		 }
    	 }); 
     }

I have spent almost 2 weeks on this module and would hate to scrap it only because of this caching issue, therefore any help is appreciated.