Fake deaf interpreter at Mandela memorial

Can't read Svenska, but is he really fake? there are different deaf languages over here.

verge has it now too in english<p><a href="http://www.theverge.com/2013/12/11/5200050/mandela-memorial-interpreter-fake" rel="nofollow">http:&#x2F;&#x2F;www.theverge.com&#x2F;2013&#x2F;12&#x2F;11&#x2F;5200050&#x2F;mandela-memorial-...</a>