The only way around 'teh canon' would be for them to say that the timeline that spock prime came from was not the same as what has been previously explored. Its is a reboot after all, so it could be claimed that we're dealing with 2 new timelines altogether. That way the novels can go where they like with it.
IMO the Romulans were by far the most interesting bad guys, I'd of liked to see more of them really, or at least more exploration of their empire and culture
That would make Nimoy's cameo utterly pointless.
It's worth Romulus being destroyed if, like Nero and his crew, the survivors jettison the bowl cuts and shoulder pads. It was the Space Fashion Police who set off that supernova!