Why Malaysia has said SATCOM places it in 2 places at opposite ends of the earth is a mystery. There will only be 1 location pinpointed by SATCOM.
That's not the case. It seems that the aircraft did not send position reports as previously thought. INMARSAT and whomever (US gov't probably) were able to distinguish which satellite(s) were handshaking with the aircraft, but only to a degree that established an "arc". That arc goes North, toward the 'stans, or South, deeper into the Indian Ocean.