Pretty sure that poking around for holes/exploits is part of the definition of what is a hacker. They notified the relevant organization as well. Not sure why you take that stance.
I'll bite -- he discovered a vulnerability in a large company and responsibly disclosed it to them. How is that a felony? Why would you post a felony online?
You pwned them? What are you twelve? All you did was commit a felony and post it online.