Here’s a small jQuery code snippet that you can use to have an easy to use checkbox toggler to enable or disable a TinyMCE editor with ease (tested on TinyMCE version 4 and jQuery version 2.1.1).

It’s really easy to use. You just need to create a checkbox element with the class tiny_mce_toggler and a data attribute with the key editor and the text area id used as a TinyMCE editor as a value. The snippet can be easily extracted if you want to use it differently.

Here is the javascript snippet:

$(function() {
  var TinyMceToggler = function(_checkbox){
    var checkbox = $(_checkbox);
    var editor = checkbox.data('editor');

    checkbox.click(function(){
      if (this.checked) {
      console.log("Add");
        tinyMCE.execCommand( 'mceAddEditor', false, editor );
      }
      else {
      console.log("Remove");
        tinyMCE.execCommand( 'mceRemoveEditor', false, editor );
      }
    });
  };

  $("input.tiny_mce_toggler").each(function(){
    new TinyMceToggler(this);
  });
});

And here you can see how to integrate it on a page with a TinyMCE editor:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8" />
  <title>TinyMCE - Toggler</title>
  <link type="text/css" rel="stylesheet" href="http://moxiecode.cachefly.net/tinymce/v8/css/all.min.css?v=8" />
  <script src="//ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
  <script type="text/javascript" src="javascript/tinymce/tinymce.min.js"></script>
  <script type="text/javascript">
  $(function() {
    tinymce.init({
        selector: "textarea"
    });

    var TinyMceToggler = function(_checkbox){
      var checkbox = $(_checkbox);
      var editor = checkbox.data('editor');

      checkbox.click(function(){
        if (this.checked) {
        console.log("Add");
          tinyMCE.execCommand( 'mceAddEditor', false, editor );
        }
        else {
        console.log("Remove");
          tinyMCE.execCommand( 'mceRemoveEditor', false, editor );
        }
      });
    };

    $("input.tiny_mce_toggler").each(function(){
      new TinyMceToggler(this);
    });
  });
  </script>
</head>
<body>
<form method="post" action="#">
    <input type="checkbox" data-editor="tiny" checked="checked" class="tiny_mce_toggler" style="display: block;" />
    <textarea id="tiny"></textarea>
</form>
</body>
</html>

You can run the example on this fiddle: http://fiddle.tinymce.com/7jeaab