You can make of this what you will. For those who love graphs you might enjoy the read. http://eplindex.com/42524/epl-all-over-after-7-games-manchester-united-hull-city-analysis.html? Basically he says that we are safe. No team in PL history has ever been in our position and not stayed up, the worst performance being 14th place by league position and 16th place by total points.
The thing about history is, it's based on things that have happened in the past. The fact somethings not happened before doesn't mean it won't happen, otherwise there would never be any "upsets" in anything. Everything that happens has a "first time".