I found this post from the O Zone through a Tweet from Jamie Morris (gutsy little guy). Although part of it talks about OSU recruiting battles with Florida, the middle section points out how Meyer's retirement could affect RR's job situation.
General opinion has Mississippi State's coach Dan Mullen as one of, if not the, leading candidate for the Florida job. O Zone makes the assumption that this uncertainty at MSU could help M win the Gator Bowl and potentially force Brandon to keep RR and "...lose their one shot at the most perfect candidate they're ever going to find in Jim Harbaugh..."
I think there are two possible explanations for Brandon's RR strategy. Either he really hasn't made up his mind or he's definitely getting rid of RR but has some alternative reason for keeping him for now - letting him coach the bowl game, letting his choice coach his bowl game, etc.
The O Zone's theory only affects the first of these options. I do agree that this might be the perfect opportunity to get Harbaugh, but I'm not convinced that beating Mississippi State would be enough to keep RR if Brandon hasn't decided.