An update: We just received news that from Monday to Thursday of next week they're going to finally allow us to go into the old office building one at a time and retrieve our personal belongings, under the watchful supervision of the bankruptcy trustee and our former IT Director (who will be able to reassure the trustee about what is and is not company equipment.)
We don't know if the cleaning staff have gone through the offices at all since we were locked out on August 23rd. It would have been a good idea, since many people left food out, fully expecting that they'd be back the next morning. And I would think the smell of dead hamsters, fish, and other office pets would have caused the other tenants to eventually complain.
Guess we'll find out the damage next week.