Personally, I'd say don't do a halloween event at all if you're going to half-ass it. Simply, if you have more important things to work on, by all means... work on them. I personally could care less about a halloween event, but if you're going to do one, and decide to do one, make it good. Not this piece of ****. If you knew you weren't putting the effort or work necessary to produce something "good", then don't do it at all.
As for OD, I think that would've been a better argument for you, than whatever it is you argued. Didn't read your argument, but from the responses, it looks like it wasn't that.
Was that so hard? (Note: I read the first paragraph of everyone's past responses, so yeah).
Where I come from, its go hard or go home. If you're not putting your all into getting something done, its probably better off you don't half-ass it.