[TimothyBurgess]

It only took me a minute or two to write a javascript bookmark (i.e., paste this in as browser URL) that will bypass the tweet requirement:

        javascript:a=window.frames[0].document.getElementById('bg').src.split('/');a.pop();window.location.href='http://www.youtube.com/watch?v='+a.pop();

It's only been tested for the OP's site (and will only work for his particular page structure) but the point is that it could easily be adapted for any one of these.

[shaggyfrog]

The OP should seriously reconsider how useful such a technology really is if you've really figured out a workaround to eliminate it 2 hours after launch.