Nope. Your position would still be completely immoral.
As proof I sight the story of Noah's Ark. This was based on a town in which everyone was corrupt. In this town, many criticized the corruption, but also went along with it to "maximize their advantage" as you might say. God had no mercy on these people and drowned them all.
So your position, although technically not hypocritical, and at first glance seeming sympathetic, is actually highly immoral.
I also note your blog name "T Sinister." You are seemingly a devious and "sinister", although highly intelligent, person. I hope good people are able to stop you before you corrupt others.
First of all, I reject biblical authority as a source of morality. However, the Noah's ark story is useful as a parable.
I agree that a person can't simply accept a system they see as immoral. There is a moral responsibility to make a reasonable effort towards changing bad social systems. In a system of throrough corruption, drastic measures and stances may be warranted.
However, in the specific case of affirmative action, this is not so. American society is, on the whole, well-ordered. Further, while race-based social injustice is a significant problem, I consider the affirmative action debate to be a peripheral issue, and probably doing more harm than good right now simply by distracting from the real issues and disrupting potential consenses by polarizing the electorate. FInally, I have virtually no means of directly affecting affirmative action programs, which at most need subtle tweaking. I could try to vote for political candidates with precisely the right view on affirmative action, but politics is a blunt instrument, mine is only one vote, and frankly if I'm going to be a single-issue voter, it'll be about something else. It's one of those things where you just have to ask for the serenity to accept what you cannot change. Actually, I probably could have the most influence over affirmative action by writing persuasively about it.

As for my name, please allow an explanation. I like plays on words. In the rhyme a line thread in general discussion, you can see a brief verse of mine that's basically a big pun on the literal German translation of Doppleganger (literally: one who goes two ways). In Latin, "sinister" means simply "of the left." ("dexter," the root of dextrous, means right). My name is Trevor, and I am left-handed. I also happen to be left-leaning politically, a prospective law student, and do enjoy the occaisional bout of subversive deviousness, all of which deepen my appreciation of the name. But the primary thing is not to declare my allegiance to evil, but to make a bit of a pun.