Redirección de formulario Drupal que evita que se ejecuten múltiples controladores de envío

I have a custom module that has a form which contains a form redirect in the submit handler.

I'm using a hook_form_alter, and appending another custom submit handler, for a total of two submit handlers. The redirect is preventing my second handler from executing. When I remove the redirect, the function works perfectly. Any ideas on how to prevent a redirect from messing up the custom submit handler?

• I can't change the order of the form alter, meaning I can't have the redirect submit hook be second.
• I can't put the redirect in the second handler, because it's not concerned with my form alter.

Algún código:

/*
Original form handler
*/  
function example_form_handler($form, &$form_state) {
  //some logic to insert into a db and then...
  $form_state['redirect'] = '';
  drupal_redirect_form($form_state);
}

/* Form alter in another file*/
function sm_integration_form_alter(&$form , &$form_state, $form_id) {
   //this is altering the above form.
   if ($form_id == "my_data_form" ){
    //alert the form weight to be populated at last
    $form['submit']['#weight'] = 5;
    $form['#submit'][] =  'sm_integration_enable_submit';
  }

}

/* This code is not being executed with the redirect */
function sm_integration_enable_submit(&$form, &$form_state) {
 watchdog('sm_integration', 'This code does not execute with the redirect in the original module enabled');
}