When several different people make queries and the same advice needs to be given, it's probably better (or at least less work) to blog the darn thing. So here's one of my little methods for defusing content disputes. Call it the three week rule.
This is one of the reasons why the cases I take to formal dispute resolution almost never relate to my own content disputes.
First, a little harmonious spirit.
Now here's the trick: if you've tried the bold/revert/discuss model and it isn't going anywhere useful, then consider this: walk away for a while. Give it about three weeks. Hang out somewhere else. Chill. Wikipedia has millions of other articles.
Sometimes the person you were locking horns with ain't so bad. In three weeks, if that person has a broader set of references and perspectives to bring to the page then that's plenty of time for them to shine. You might be pleasantly surprised.
Second option: your hunch is correct and that dude's a POV pusher. Let them own the article for three weeks. If that's what they really are then they'll slant the article even further so it's obvious to everyone. Once things reach that stage the problem is easier to correct.
Third option: the individual is a troll (or at least feeds off conflict). So stop acting like an immovable object, and watch the irresistible force wander elsewhere. There's a beauty to the Zen approach.
So give it three weeks. Let the article be wrong. When you return, post politely to the talk page. If nobody objects then go ahead and edit. If somebody does object then don't quarrel; open a content request for comment promptly. If you're really right then uninvolved editors will step forward and agree.
It's surprising how often this turns out well.