Absolutely, there's no question they managed to pull every big hit out of their collective ass for five months, but on the same token, they're also incredibly underperforming offensively right now. The real talent level probably lies somewhere in the middle, which means they're likely to regress back to normal at some point (hopefully in time for October).
Just for the sake of making a point, Granderson is running out a .050 BABIP as a Dodger. That's comical. His career BABIP is .292, and BABIP is a number that tends to normalize to somewhere around .300 for a large majority of players. His power and ability to work the count are still there. More hits will start falling in for him just as a matter of sheer statistical probability.
The team is not this bad. As good as they were for 5 months, they're on the opposite end of the spectrum right now. Baseball is a game of averages, and at some point it will start averaging out.