I download and installed the 7.x-2.0-rc1 tar.gz but wanted to get the dev version of 7.x-2.x-dev. I went disabled Media You tube fine, as well as running the uninstall yielded "successful". I went back to modules and media you tube was still listed. I then tried and run the install of Media You tube 7.x-2.x-dev version, which it would not let me because it thinks its still there.
UPDATE: I just tried, dumping a 7.x-2.x-dev build into the Rc1 build modules folder as I read else where that it would fix it possibly... it reinstalled fine, enabled/disabled and ran the uninstall which stated it was successful, but same issue again still listed.