Unregistering and re-registering ngBlur.

gistfile1.txt

  var noopDirective = function() {
    return function() {};
  };

  module.factory('ngBlurDirective', noopDirective);

  module.directive('ngBlur', ['$parse',
    function($parse) {
      return {
        compile: function($element, attr) {
          var fn = $parse(attr.ngBlur);
          return function(scope, element) {
            element.on('blur', function(event) {
              scope.$apply(function() {
                fn(scope, {
                  $event: event
                });
              });
            });
          };
        }
      };
    }
  ]);