damn that's a tough one, but DON'T make it symmetrical though cos the only thing worse than one fucked up patch in your hair is another one at the other side...just wait it out until monday and if anything, if you are being picky, the interviewer probably won't even notice it, or if you're right he'll mos probably feel awkward about saying anything about it anyway, if you front like you don't know (unless he's an asshole) so it's win-win