I have successfully flown several times now with a superspeed LOADED with a feather in my carryon. The first time was an accident. The second was an experiment. After that, it was just habit. I think they see the razor in the scan but don't equate it to a loose blade. If they saw the outline of a loose DE blade, however, they'd freak.
You may well get away with this, but it's not a good idea. At any point they could open your bag and toss your razor into a garbage can. They can also make your life miserable in multiple ways.
I wouldn't risk it.