HeartSailor, if this is a story you want to enter into the flash contest, then I'd recommend you don't post it in the EA crit group. While you're certainly allowed to have people crit your entry ahead of time, anyone who knows your identity as the author will be disqualified from voting for that piece, since the contest is supposed to be anonymous. And since a lot of forumites have access to the crit group, you'd be cutting out a lot of potential voters before the contest even starts.
That said, one of the wonderful things about the flash contest is that people generally give lots of useful feedback when they read the entries, so if you don't win, you can revise it after the fact.