Well, there's another article he
http://spaceflightnow.com/news/n0511/29hayabusa/ which mentions the
thruster problem, but still seem to quite tell us what is going on.
No doubt partly a question of translation from the Japanese...
There's also http://www.hayabusa.isas.jaxa.jp/e/index.html which has
nice images of the target which Hayabusa dropped.