Unable to uninstall singleplayer or HD textures

me too , i want to uninstall resec and the uninstall in game option doesnt work - does nothing . I put in a ticket,  the help i got was dire - no help. They sent me a document on how to start my pc in safe mode?!!!!  i asked what the exact name of the redsec file was ( no its not called redsec ) so that i can delete it manually from the files on my PC. They told me there was no solution to the problem . My cdrive is now critically full ! grrrrrr