It is so insane what the Green Party is doing with this. All they'd have to do is literally nothing; that means they do not even need to vote FOR the law in the Bundesrat. ALL THEY'D HAVE TO DO IS NOT VOTING AGAINST THEIR! OWN! LAW! The state representatives could just abstain from voting, and that would be enough.
Please everyone, write a lot of Emails to them, take action somehow, show them that this is not just an issue for Germany, but for whole Europe, and that backing down will make them the ultimate laughing stock. Now is the time for action! Maybe some VIPs at the Spannabis Fair in Barcelona can put out a joint statement. I don't know whether this would help, but we have to do something.
One thing keeps me a little bit optimistic: Bavaria, Germany's Texas, a very conservative and populistic place (no Green Party there), announced they will fight cannabis smokers even after the decriminalization. They announced a special fund of over 4 Mio Euro and a task force to make it more difficult to establish the cannabis clubs and to tease every cannabis smoker to the max. So even they can't believe that the Green Party is so stupid to vote against their own law.