Well as always mankind wants to blow things up ... and thinks that way.
(I think Nassim Haramein said that).
What I have read is that they gave the orbiter 2 more years because it still was functioning very well. There was a big meeting
with a lot of scientist who could bring their wish list and they made a schedule around that. As far as I understood they
still have the plan to crash it. And it will be done in 2010 ...
First thing that crossed my mind is ... the must have a dark secondary reason to postpone to a better date ...
Cheers