According to Kwpolska: # 2. Cannot unflag a package unless you’re the maintainer — sometimes, # flags are made errorneously and you need to revert it.
+1 here. It's great that not just anyone can unflag a package, but if I inadvertently flag a package, it's better if I can revert the flag myself rather than having to add a comment for the maintainer to remove the flag or send a message to this list to get a TU to do it.
~Kyle http://kyle.tk -- Linux killed Kenny, bastard! --Subject of a real e-mail to the Linux kernel mailing list 12 January, 2009
