Several Issues with content

I have several problems with this editor, I really hope for an easy solution because this editor seems to be the best out there.

I may be have a unique issue because I am taking a wordpressessingML document applying an xslt transformation then saving it to the db. There is a ton of extra xml information in there. I cannot have this stuff removed.

First problem is that when I load data from the database the editor just breaks. I have tested and it appears the editor can handle simple documents reduced to 1 long line, I figured part of the problem was just with single or double quotes but I fixed that by replacing them. Since it still breaks I also stripped everything but the body content and it still breaks.

I guess I'm just curious why this editor isn't just a textarea replacement, it would be nice just to wrap the content in a textarea like some other editors do and be confident that everything would load.

The next problem is that vml data is being removed. I load it from a single line but the source view shows that there is no content. What is crazy is that it is valid to have vml in an xhtml document, do I don't understand why the editor is being that agressive. What do I need to do to keep this?

Any help would be fantastic.

David