How can I uninstall a graphics package in recover mode?

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http://askubuntu.com – So I've been having some graphics problems, and recently I installed these packages: http://www.ubuntugeek.com/how-to-install-intel-82852855gm-drivers-in-ubu... But after installing those and restarting my computer, I cannot get Ubuntu to load--it freezes on the purple screen. In recovery mode, I have tried to use root to fix some things, but it hasn't work, and I cannot connect to the internet in recovery mode to download anything else. Is there any way I can uninstall these packages in recovery mode to revert back to what I had before? (HowTos)