> Once it's fixed (I'll let them know about it tomorrow and I expect it'll be rectified in a day or two) I'll update this page, but until that time, try it for yourself.

Sadly, it will never be fixed. This is not a bug to them. They are forcing every url on twitter to go through t.co for click tracking. It is no longer possible to put a url into a tweet without going through t.co, unless you leave off the http, which makes it unclickable in a lot of clients.