When answering he is not looking directly at the interviewer and actually turns his head away, but notice the eye dart to the interviewer- people will do this to check how their lies are being accepted. When lying we need to gauge if we need to be more on guard, or if confrontation is likely, or if we are getting away with the lie...
Then he touches his ear. I have seen this many times when someone is saying something -or hearing something- they do not like to hear. He doesn't like hearing his answer.
http://www.spyingforlying.com/2010/06/gerry-mccanns-denial-of-use-of-cold.html
