What Exactly Was This Interpreter Signing?

From what I understand they were in a rush to find someone who could sign for their deaf audience. Unfortunately the guy they picked was an employee who had a deaf brother. I have to wonder what he says to his brother. Obviously the guy really doesn't know sign language as well as his employers thought or hoped. Jason Hurdich an expert on sign language from Clemson says he couldn't understand 95% of what this young man was signing. 95%!?! I fear for our deaf friends in Florida.