Brief word on sign language interpreter who was having a religious experience

Interpreter at Mandela Memorial Says He Saw ‘Angels’
PRETORIA, South Africa — A supposed sign-language interpreter accused of being a fraud after he stood beside President Obama and other global dignitaries at Nelson Mandela’s memorial service told a series of interviewers on Thursday that he was a schizophrenic with a tendency toward violence and had seen angels descending as he worked in the stadium where the event was held.

So the sign language interpreter was having a religious experience and that’s why no one could understand him?

Is this the first ever case of speaking in thumbs?

( Thank you – I also do children’s parties & bar mitzvahs)