Actually the numbers have gone up every year. 205 in 2011. 237 last year. Now, the increase is mostly due to release of captive-bred birds, but a few chicks have hatched in the wild. Part of the problem is that condors are just naturally slow-reproducing. And lead poisoning actually is a problem, to the extent that they've pulled birds from the wild to treat them. Whether that justifies a lead ammo ban as proposed in California is a different matter. Another problem is chick mortality caused by parents feeding them trash. At the end of the day, they may be simply too fragile a species to survive in the wild in the modern world despite the millions spent to save them.
It's interesting to read the link you provided, though. As you say, even the wind farm opponents concede that they can't actually PROVE any birds have been killed. They just assume it's so and that there's some conspiracy to keep them from knowing about it. Again, my natural skepticism comes out.
Whatever. You win. There’s a nice trophy by the door.