Normally I wouldn't like to draw any attention to myself but a few things that need to be pointed out. Hypothetically speaking, if you did indeed do everything you say you did then the site was a giant POS to begin with. Regardless handing over info to LE, well that just lost respect of any good loxx.
Lets replicate a few of the claims you are making:
Figured out it was Ngnix, a monkey with no eye balls has a 70/30 chance of guessing this correctly. If it does have eye balls and can type a few things on a keyboard than you can figure out if its Apache or Ngnix very fast. Not impressed.
Signed up a few thousand accounts, there so happens to be 10 tools of the top of my head for blackhat SEO that does just this with way more advanced registration methods on more secure sites. Not Impressed
Figuring out he isn't using bcrypt or other secure encryption techniques... requires the least bit of social engineering to narrow that down fast Not Impressed
Figuring out that he is using CakePHP instead of some other subset of PHP....http://guess.scritch.org/ or just using a common url format and tracing it from there Not Impressed
Creating a Jlaw account with whitespaces, I found that a little clever
Now onto the newer claims:
Claiming to grab their DB (for a little more authentication, what type was it and how many tables, simple or advanced schemas? Don't need to screenshot it but provide a insight), I find this a bit odd that this was brought up after the fact, I challenge the legitimacy of this claim all together. Regardless if you did this, Now I am a tad bit impressed
I just don't like the concept of being angry at a shitty site admin and his shitty code so you turn it over to law enforcement... now what kind of loxx are you? Screwing over the foundation of what a lot of people stand for all because your having a temper tantrum? To all the creators/owners of current darknets, please for the love of god set up a bounty system for bugs. Hell go search around the web for a nice little image of a wonderful OS that our old friends at lolsec and anon built with tons of cool tools to test vulnerabilities. Hell look up what sql injection and serverside scripting is. Hire a real loxx to penetrate the hell out of your site.
This subreddit has got to have the most drama per capita on all of reddit.