Impossible. Total nonsense. No way this is real. How could you just suddenly develop an accent? Even people who study a foreign language for YEARS sometimes can't sound like they are from the region they are trying to learn the language of. I am calling B.S. on this one.
Yeah, I remember a British woman who went into a coma woke up with a Jamaican accent, which when she was interviewed for the news sounded incredibly false but this is a condition so I shouldnt make fun.