I would say Cabrera has a decent prognosis as well. Of all three (Furcal, Renteria, Cabrera) he's the only one who's remained steady since the beginning while the others have cooled a bit. For the last month, I would say Cabrera edges out Furcal in performance.
Now what to do about Mora? He is the anomoly of the season and nobody really knows what to do about this guy. He can't stay this good and my bet is that he will taper off sharply after the all-star break. Still, he never performed this well for this long so there's always the possibility that he's achieved some sort of "illumination" in the way he plays baseball. He indicated in an interview that his past dropoffs were due to the way he always tried to gun for a home run and be too much of a power hitter. He now believes in a more patient method and is concentrating on just getting the ball in play. This would explain is high OBP and average. Still, his true value will be only be known next year in retrospect. In the meantime, I'll ride him as long as he keeps hitting.
Experience is a hard teacher. She gives the test first, the lesson afterwards.