In an updated Chronicle story on Brandon Lyon, we see just how extensive his biceps injury is:
The problems, Lyon said, have persisted for about a year and a half. He said he has reached the point where he subconsciously does things left-handed that he normally would have done right-handed to avoid pain.
I can relate. The problems with my English have become so dire that I subconsciously began speaking in French. C'est la vie.