According to a rather ancient favourite book of mine, 'The Science In Science Fiction' this may be speculatively how close you passed to the singularity, without actually falling into it. Effectively it means speeding up until you have exceeded the speed of light, and then due to relativity time may be passing at a different speed. Perhaps the idea is that after slowing time so much, it would start going back, and not just become exponentially slower (approaching zero but never quite reaching it) - which I think I prefer as a theory.
Given that this means passing through the black hole and back out, then the individual from that reality has travelled to another. This does not mean that others from other realities have done so, so he may still be alive in other realities, and if the current one is different from his original time stream, then he may come to live again when born in this stream too.