I even believe there is a "leave folder" option in the Dropbox context menu.
The whole point of sharing a folder is that everyone has the same access rights to it, so if you delete a file from there, or the whole folder, it will of course affect everyone else whom you're sharing it with. That's why the leave option is there.
Lukas
I won't be using this account any more or participating in the forum activity through other childish means like creating an alternate account. I've asked for the account to be removed but I'm not sure if that's actually technically possible here. Just writing this for people to know that I won't be replying, posting new topics or checking private messages until the account is potentially removed.