I did contact support unfortunately I just received a very scripted 'sorry please send your laptop in for service'. In regards to the issue, I can replicate it in a document while typing. Although it only happens after holding the key for several seconds (like when moving in a game), so generally I would have no reason to hold the key down outside of gaming.
It doesn't appear that the keyboard is a single rubber membrane although I am unsure how it is fixed in place. I have attached a picture of the key in question, plus the key to the right is the "E" key with the plastic clip still in place.