Move UnSyncable Notebook to New Document Library

I'd start by creating a new notebook locally on your PC. Then "Copy" the contents of the Notebook/Folder(s), page by page from the notebook you are having problems with. Right click each page, select "Move or Copy" and then "Copy" to your new Notebook (You choose which Notebook to "Copy" to in the pop up which gives you a full view of every notebook you have).

This will give you two versions. Once you're happy that the new version (& as you copy each page you may spot where the corruption has occured) you can then put the new Notebook wherever you want, keeping it local to your PC or on SharePoint etc.

Suggest you "Copy" rather than "Move" so that if anything goes wrong you still have your original. Once you've got the copied files/Notebook where you want them and its syncing properly you can delete the original duff file(s)