This toggle option enables you to turn on/off the auto patching of the submit function in forms. TinyMCE will auto move contents from the iframe to the hidden textarea field if for example a JavaScript uses a form[0].submit() call. This is the same as using the tinyMCE.triggerSave() call. This option is set to true by default.
Example of usage of the submit_patch option:
tinyMCE.init({ ... submit_patch : false });