I have not read your original post, so I've only gathered what must have happened, and I see that you are being taken soundly to task for it.
I'm afraid if I do read that post, I might not be able to write as civilly as I'd like to -- so let me say this first:
Although cats are extremely agile and usually (not always, but usually) "land on their feet," they are nonetheless much smaller than we are. Their bones are more delicate, their brains are less well-protected from trauma, and their internal organs are more easily ruptured.
Their psyches are also extremely delicate. It's part of their survival instinct to remember vividly every bad thing that happens to them, as a way of being prepared to keep it from happening again.
So when you traumatize a cat, you traumatize him for life. If he is ever able to regain his trust in the human who hurt him, it is a remarkable feat... and he may become fearful of all humans.
Also, physical "discipline" simply doesn't work with cats. It may give you a cat that doesn't jump on the counter, or whatever crime it was this cat committed -- but it will also give you a cat who fears and avoids you, and possibly turns on you (with good reason).
So even just as a practical issue, it is wrong and foolish to do harm to a cat -- even the mildest type of harm.
And when you consider the moral issue, there is no way in the world to justify ever mishandling a cat. You weigh at least 15 times as much as the cat, and you have a human's ability to reason. You're supposed to know better ways of dealing with your anger than physically abusing a small animal.
I'm stating this in civil terms because I fear that the message may fall on deaf ears when it's stated as others have said it here, though goodness knows I certainly feel the same outrage. I hope my restraint makes it easier for you to listen with an open mind.
Please -- don't just go away mad. Think through what's been said here. Consider a change in your approach to this cat, and all cats. And although I don't know you, I suspect the same kind of change could help you with people, as well.
Thanks for reading. I dearly hope you will become a reformed and compassionate cat owner... and as such, you will be welcome on this site.