When developing in GNU/Linux, how can a website be checked against Internet Explorer without:
Are there any options other than the above?
Net Render http://ipinfo.info/netrenderer/index.php renders the page in IE and shows you a screen capture. (If only it would actually work right now...)
There's a firefox add-on for quick and easy access to this: http://nicopensource.free.fr/pages/ienetrenderer-en.php
Honestly speaking, you have eliminated all the possible solutions I can think of with your requirements/criteria.
How about tackle it from another angle. Ask yourself or tell us WHY not those that you chose to eliminate?
Why do you need to render web pages on IE on Linux? My guess is you want to test your designed/developed pages on a browser still widely used by users.
Why not using hosted services like BrowserShots, NetRenderer or even LitmusApp?
My guess is you want something faster or a tool you can test without going online? Or perhaps you only have local files and do not have a public Url to test your pages?
Why not using IEs4Linux? Not good enough?
Why not use a virtual machine? Too resource intensive? Too slow to start up?
Share with us your thoughts. Maybe we can brainstorm something workable for you?
PS: Sorry this is not an answer but it's too long to be added as a comment. :P
Btw, Merry Christmas and Happy Holidays!