If you can't for legal and ethical reasons say bob sucks don't hire him then you can't communicate the same thing in a way that is as subtle as a brick.

Next time before you do something like that I suggest you communicate with your companies lawyer and ask his opinion on the matter before you get your company sued and yourself fired. Especially if you are going to discuss the matter on the public internet.

Odds are incredibly good that its trivial to discern your actual identity and that you have done the same thing repeatedly. Its entirely possible that someone could be working out right now why they weren't hired and whom they should sue.