Video posted online appears to show the man accused of 'faking' sign language during Nelson Mandela's memorial 'interpreting' for South African president Jacob Zuma last year.
The footage, apparently filmed in January 2012 at the ANC party's 100th anniversary, shows the man making gestures as Zuma sings to the crowd.
ANC communications manager Keith Khoza told NBC News that the interpreter had translated for party events in the past, but said that the man only “volunteered” and was not paid.
Having just met the sign language interpreter from Mandela's memorial, his explanation that he had a schizophrenic attack seems plausible.
Deaf organisations have complained after the man translating the speeches at Nelson Mandela's memorial service 'signed gibberish'.