To fully remove/uninstall EnSharpen, you will have to manually delete some files on your computer. Please locate and delete the following items:
"TechSmith" folder in "\user directory\Library\Preferences"
"TechSmith EnSharpen" folder from the "Applications" folder
"TSCC.component" from the "\Library\QuickTime" folder
After deleting these files, please restart your computer. This should fully remove EnSharpen from the computer.