
Basically 'yes' to your question...reverse the process to uninstall it. (Back up your database first though)
I do not believe that that particular hack works with 2.0.9.x...the core module code has changed in such a way that the hack essentially prevents the database and site form putting the info together correctly (can't figure out where to insert the database data in the theme now)
If you were able to alter an existing .htaccess file, then you can actually alter it manually and accomplish close to the same thing. I've been able to get the google spider to go 4 directory levels deep, and to extend as far as the first parameter called in each uri just by using redundant, and overkill .htaccess lines.

Good luck!