I have had the same thing happen to me from my purchase date in September. Like the previous poster stated, switching to a virtual machine and typing in there *sometimes* clears the stuck control key. I have also tried using the Accessibility option On-Screen Keyboard, which shows me the laptop believes the Control key is pressed. But that is not a reliable way of clearing the condition.
This is truly killing me, turning a wonderful laptop into a lemon.
Hoping someone posts a solution!