I'm sorry, but whatever you explained to the Head Judge needs to be exposed so the other players in both the tournament and the TCG community can look at it, to see that there is no one manipulating stuff or overlooking mistakes, it gives everyone a sense of security and shows how serious people are about what's going on with the game.
If Pepin has been appointed Head Judge for the tournament, he is RIGHT to notify people of the event and ask that you explain yourself, but he is WRONG to do so the way he did (sorry, Pepin). What he, as Head Judge, SHOULD have done is PM'ed you, and then post both his message, your response and his position on the case (and he DOES have the final saying in this).
Even so, because he made a mistake, YOU don't automatically get the right to post something along the lines you did by virtue of "two wrongs make a right", you just missed a GREAT opportunity to simply explain what happened, point out the error in his ways and come out on top. No, you had to "be cool" and pose as "Mr.-ohhh-look-at-me-there's-no-justice-in-the-world-I'm-the-best-player-all-around-I-don't-need-to-cheat-so-bite-me".
To be honest, by your attitude towards the Head Judge of a tournament alone (and IT DOESN'T MATTER the REL of the tournament or if it is or is not sanctioned, it's STILL a tournament), you should earn a DQ from the event. If it was a certified tournament (like, say, if a PC arises in the near future), you'd ALSO earn a nice ban to go along with it on your top shelf, you know, possibly alongside all those trophies and medals from having a win ratio of over 80%.
So, all in all, I'm sorry you reacted the way you did. Pepin has the final word on the subject, but if it were me, you could consider yourself disqualified, and be damned sure that you'd be kept under surveillance on future events.
PS: On a related note, mind the language AND the way you adress fellow forumers IN GENERAL, WHATEVER your reasons are. I hate deleting posts, but I AM still a moderator, and I was *this* close to simply deleting yours (and the subsequent answers) instead of posting this response.