Re: uninstall bbpress
If you just delete the bb_ tables, and remove the files who belong to bbPress, then you are just fine. There are no specific tables (as far i can see) who are used by buddypress in combination with bbPress. If you ever plan to install bbPress again, just install it in a seperate database, that also just works fine in combination with WordPress <> bbPress 
So:
1: Delete bb_ tables
2: Delete the bbPress files.
And youre actually done with the uninstall
