How to uninstall SQL 2005 if it's missing in Add/Remove Programs

First of all - here is the support KB article. In my case - I was unable to uninstall SQL 2005 even manually from the command line (ArpWrapper was ceasing to work, displaying some "Registry Enumeration Failed" error and uninstalling components with MsiExec using their GUID's listed in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall just didn't worked). I was able to do it by uninstalling SQL components manually with Microsoft Windows Install Clean Up utility (do it in order, specified in KB article).