Part of keyboard not working due to beverage damage.

I spilled some unsweetened tea onto the left side of my keyboard while it was running. I sopped it all up pretty quickly, but didn't even turn the machine off. Predictably the keys on the left side started behaving strangely. There's no physical stickiness when pressed, but the keys in the second column (f2, 1, q, a, z, and option) don't respond. Furthermore, the computer behaves as thought the option key is always depressed, closing all windows when I press the close button and so on. For a while, it behaved as though the control key was down, bringing up contextual menus everywhere I clicked, but this cleared up after half a day. It's the next day now and I have since shut the machine down, removed te bottom cover, and set it in front of a fan. I have removed the keys and there is no liquid or residue visible. What should I do now? Is there any hope for my machine?