[Owncloud] Cleanly uninstall ownCloud?

[Advrk Aplmkt]

Hello,

I've got continuously updated ownCloud from Git on my server right now, but would like to revert to the stable version 3.

How can I completely and very cleanly remove all traces of my current ownCloud instance? This is so that I can install the stable version from scratch.

BTW, is there a release date set for ownCloud 4??? If it is not too long from now perhaps I'll wait until ownCloud 4 is released before I reinstall...

Thanks!