// Drupal 7 views.module allows to refresh ajaxified views
dynamically via a javascript call.

jQuery('.view-id-XXX').trigger('RefreshView');

// Implementation in PHP

$commands[] = ajax_command_invoke('.view-id-XXX', 'trigger', array('RefreshView'));

return array(
      '#type' => 'ajax',
      '#commands' => $commands,
    );

// OR

$commands[] = ajax_command_invoke('.view-id-XXX', 'trigger', array('RefreshView'));

ajax_deliver(array(
      '#type' => 'ajax',
      '#commands' => $commands,
    ));