No new information from the "forum staff". I think it is not so easy to reactivate m.spotify.com. Is it possible to send the app by mail, so I can install it via BB-Desktop-Software. I think you see my address in my profile.
Can you try the direct download link direct from Spotify (not sure it will work):
http://download.spotify.com/blackberry/Spotify.jad (from your mobile browser)
If that doesn't work, you might be interested in the link outlined in this post.