Did you uninstall BigFix from the Program and Feature? If you do, then it is should already remove from your computer. Now since you still have the BigFix folder and the files that you deleted (180) are the so called fixlet. This were the BigFix store all the fixlet that has been downloaded and applied to your computer.
Now to ensure that all the remnants or traces of BigFix will be remove, you need to run BFRemove tool. BFRemove is a tool that will remove all traces of BigFix from your computer. By running this tool, then reinstalling, you will be able to remove all BigFix files and registry information.
(Note: running BFRemove will get rid of all Fixlet message history, BigFix preferences, and will remove all of your subscribed Fixlet sites -- when you reinstall you will be subscribed to the default Fixlet sites).
1.Close BigFix by right clicking on the BigFix icon (little blue circle with a "b" in it) in the bottom right corner of the screen, and click on "Exit BigFix".
2.Download BFRemove.exe here
http://help.bigfix.com/download/bfremove.exe, then click Open when prompted.
3.You will be prompted to confirm removing BigFix, click OK.
4.BigFix will now be completely removed from your computer.