uninstall -f fails with dependencies

[cweiske]

$ pyrus-5.3.21 uninstall --force docblox/DocBlox_Template_new_black
Pyrus version 2.0.0a4 SHA-1: 72271D92C3AA1FA96DF9606CD538868544609A52
Using PEAR installation found at /opt/phpfarm/inst/php-5.3.21/pear
Pyrus\Installer\Exception: Dependency validation failed for some installed packages, installation aborted
 Pyrus\Dependency\Exception: channel://pear.docblox-project.org/DocBlox_Template_new_black (version >= 1.0.0) is required by installed package "channel://pear.docblox-project.org/DocBlox"

I'm using -f to get around this restriction, but that fails.