I already gave you my opinion in your other thread about this same subject matter.
But, even if this does turn into something, they really don't have anything on you besides what you said. aka- your admittion.
And since you were not read your rights, and you were not under oath (like u would be in a Court Room) your admission means jack shit. I am pretty sure your lawyer (even a free P.O.S one the courts give u) would get that thrown out in 5 seconds.
IMO-They fucked the pooch on that one. But yeah, they sure scared YOU with a little walk + talk didnt they? lol
(sorry, its not funny, but I can imagine u pissing your pants standing with the door open)