Does anyone know how to delete Time Machine in Mac OS X 10.6.4?

Before answering:

1. sudo rm -rf /whateverthetimemachineis does not work
2. Disabling the ACL permissions first with sudo fsaclctl -p /whatever -d does not work, sudo: fsaclctl: command not found
3. Use the delete all backup feature in Time Machine... this is slow as hell, would take days. Need a command line solution.
4. No I don't want to reformat the drive, I have other content on it, and no don't say I should have separated on two partition or two drives, I did it this say since partitions cannot be dynamically changed, and two drives is annoying since, whats the point of having a big drive?... plus has no relation to the issue at hand.
5. Already googlied for hours and read everything on Super User, nothing working. and all solutions are the first 4.

Any clues?