I have the same problem when I wipe my laptop down with water or any other computer product. The problem is that extra moisture travels along the edges of the trackpad, causing it to believe you're constantly pushing around in every corner. I usually allow the trackpad to dry, but if you take a piece of paper and slide it between the trackpad and the palm rest, working your way around each side of the trackpad gently, you may discover that it aids. The paper might become damp. If this happens, simply move on to another corner. This should work; If these steps don't work, remove your battery and check if there is any water under the trackpad. If nothing helps, leave it alone for a day or two, and it should be fine. If nothing works, then there are chances you damage your laptop trackpad you have to replace it.