I have been unable to uninstall InDesign CS5.
CS5 and CS5.5 are installed on the machine ((Windows 7 Enterprise 64-bit).
When attempting to uninstall from the Control Panel, the progress bar fills while "Gathering required information...", then the progress bar begins again, but before it completes (less than 30 seconds) it regresses back to zero and the uninstallation ends.
I have deactivated the product and ran Adobe Creative Cloud Cleaner Tool. The tool removes some ancillary CS5 programs and no longer sees CS5 as being installed, however I can still launch CS5 from the Start menu.