Corsair customer service is pretty good, they reply within a day or two after you email them, and just need you to give them the serial number, and they'll issue you a RMA to sent back the defect . You'll have to pay for the shipping tho.
I'm guessing it's the mousepad that's causing that shit. Laser mouse user rarely use mousepad, cause the sensor might pick up the texture on the mousepad. Try it on a desk surface see if jump all over.