yep without additional tools that modify the registry (or u do it on your own) u cannot completely reset file assosications to windows defaults
but if u just want to change .bin files from vlc to another programm, this can easily be done with windows control panel
Programs > Default Programs
now the 2nd entry
"Associate a file type or protocol with a program"
here u can change every file type to a programm u like (but u cannot restore it to windows default)
if u change .bin files from vlc to another software, and then start vlc
vlc won't assiocate it back to vlc on its own