How do I remove malware removal programs?

Hi,

Thanks to Twin Headed Eagle, my PC is now clean. However I have the following programs I just can't seem to uninstall.
aswMBR, JRT, FRST, and shadow explorer
I have tried the "add/remove program" utility but they don't show up
I have tried http://www.avast.com/uninstall-utility It doesn't find aswMBR
I have also tried http://www.revouninstaller.com/ It doesn't find any of them
The last 2 I downloaded from the article...

How do I remove malware removal programs?