mmmmno, Peter, the double header is actually a part of the Safe Saving method of InDesign (it only updates one of these at a time, so if this fails it can revert to the other one).
My own inspection tool reports *no* errors or warnings (not that I'd personally vouch for its accuracy--but still...if it *did* report one, I'd be sure). Also no particilarly strange fonts (Minion Pro, Myriad Pro, Adobe Garamond Pro, Calibri, Helvetica Medium). Only probably that last one could be the source of your problems -- try de-installing all of your Helveticas and attempt to re-open.
"blah.pdf" is an external link; try moving this out of InDesign's sight before re-opening, just in case there is something bad in there as well.
I see some weird 'spread transform' values. Is that normal for CS5.5, or did you move some pages around to make custom spreads?
(And a couple of original Word RGB imported colors; one in your style "Body 1"! Now that's a no-no as well, for technical reasons this time.)
... Bottom line is, there is nothing I can see that could be a definitive cause of this crashing ...
What I *do* see is that this particular document crashed 3 times and was recovered 3 times, apparently without a proper "save" inbetween. That won't have helped either.
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