One could argue that Spock was rounding up when he said "129 years". Maybe it was 128.7 years, which could conceivably put Hobus in, say, November or December 2386. Unfortunately, that's negated by one line of dialogue from ST'09: COMPUTER VOICE: Stardate twenty-three eighty-seven. Commissioned by the Vulcan Science Academy. Unless the computer is rounding up too, maybe we can take this as just another James R. Kirk moment and move on (if indeed Picard leaves SF because of Hobus). I guess the bigger problem is relating the armada rescue to Hobus. But I suspect they're going to have the rescue be from the Borg, who then do a Hail Mary on Romulus' sun and precipitate the (irreversible) supernova.