Uh... It actually IS an official tourney, so...
1 More Question:
If I trade a real event pokemon from a real event from a game I hacked AFTER I got said event pokemon to a non-hacked game, if I don't use it, will I still fail Hack Check???
Like Venser said, the official tournaments for 2010 have long been over. The next ones don't start until May 2011. So what you're going to cannot possibly be an official event with hack checking DSis.