Looks like you've tried pretty much all the standard stuff. You can try opeing as a copy and repeating the .idml export, but don't hold your breath.
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Please visit these links;
These links contain steps that will definetly fix your issue.
The described symptoms are completely different from the problems covered in those two links.
I agree with Peter ,
first the Indesign is not crashing its freezing ,
Secondly , it is document specific not application specific
Thanks Peter. Unfortunately I cannot share my file with an outside party. It looks like a will be doing a rebuild. My main concern was to avoid this happening with another file. How did this file become so corrupt in the first place? Is there anything I can do (or not do) to avoid this issue again? Thanks for your response!
You can try to open the file as "Copy " and then save the file with the new name and then check
othrwise you may create the new document and then copy and paste the content from the corrupt file to the New document as it may help.