While it's true that Tsubasa story-wise isn't the greatest anime by a long shot, it is animated by Bee Train. I only watched the show initially because of that fact, and because of Kajiura's music.
That said, as far as I'm concerned if fansubbers simply can't be bothered subbing one week then whatever. (Not saying that's what happened, since I don't know) They do it for free, and regardless the fact that you're a consumer doesn't give you the right to bitch and moan about something coming later than you want. It happens with stuff you pay for too, and you still shouldn't complain. It's not like people go out of their way to piss you off by not releasing things, so get over it.
Thanks to L-E & DB for continuing to sub Tsubasa. I started watching Blood+ too last year when I had a better internet connection, but these days my speed doesn't allow me to check out all of the releases.