"Too radioactive to be recoverable" and "because of radiation fears" seem rather different.
Just like you might not recover a body from a minefield, but it doesn't mean the body is explosive.
Just like you might not recover a body from a minefield, but it doesn't mean the body is explosive.
The fact is that there is an evacuation area around the Fukushima plant established out of an abundance of caution. The highest readings that have been taken within that region --- not including the plant itself, which is a different story --- are still below a level that would pose a plausible threat to human health; they're in the single-digit mSv/hr range.
It's also important to understand that the evacuation area is designed to address multiple vectors for radiological health threats. Not all radionuclides disperse the same way, and the ones with the strongest impact on the environment settle out of the atmosphere as sediment. Presumably, you don't want kids stuffing their mouths with I-131 that settled in their sandbox. To avoid scenarios like this, you evacuate.
But most laypeople (of which I am definitely one) start with a conception that is much more primitive than reality. They imagine gamma radiation zinging through the air and making people's hair stand up and giving the carp in the lake third eyes. Not so. The most radiologically active stuff dispersed over a distance around the plant is probably no longer airborne; it settles out of the air quickly (and, not for nothing, but also has a short half-life).
It is also a problem that these bodies have been in some (tragic) cases sitting out in the air --- not because of radiation, but because of the scale of the disaster across Japan --- and thus the same rationale that motivates the evacuation (to avoid pointless exposure to Cs-137 and I-131 sediment) also suggests maybe it's not a good idea to distribute the personal effects of contaminated disaster victims. But that doesn't mean the corpses are glowing. It may, for instance, mean that the jackets of 1 out of every 400 people have to be bagged differently.
It is simply not the case that the region within 30km of the Daiichi plant is a nuclear hellscape.