This is completely ridiculous. Killing all active passwords on a system that is going to wipe unsynced notes when you re-sign in without an email warning to the account holder or some type of message is completely irresponsible. I understand why it was done, but we have to pay for your poor security.
Didn't it occur to you that by disconnecting remote devices from the network you most certainly would be stranding some notes on the remote device?
This is a fine way to end my assessment of Evernote for use in our enterprise. It made my decision very easy. I will not recommend its use and I most certainly will be informing colleagues throughout my sphere of influence to find another solution as this vendor does not care about its users, only themselves.
It would have been very easy to set things up to preserve remote device files in the event of an issue like this. Please! 
Very dissappointing!! 
If you read the links in the posts above, it appears that "killing passwords" didn't necessarily "wipe unsynced notes" in the first place - we're all just getting to grips with exactly how to recover from these situations, and jumping to the conclusion that "this vendor does not care about its users only themselves" is not only illogical, but completely unsupported by any posts or comments so far.
Evernote were in the position of having defeated a very professional hack attack but were aware that their very large user base could be at risk in a matter of hours or days if the encrypted password database was breached. They enforced a password change on all users to protect our data, but the size of the user base and the very nature of email sending means that everyone could not be warned of this reset in advance. I'd bet that some emails still haven't arrived.
Evernote is a cloud storage service, which uses clients on devices without local hard drives that depend on a network connection to the server to save data. Any user saving 'local' notebooks on such a device deserves a medal - you simply can't do that. Every other note is a temporary file waiting transmission to the server. Any user of such a client should be aware that syncing with the server is as essential as hitting 'save' in a desktop menu, and exiting the app before doing that will cause data loss.
If anyone lost hundreds of notes, then - all due respect - that's at least as much a user issue as it is the app provider. If I can't sync I always want to know why as q
Edit: Heh. Very much a case in point - I just went on typing happily, having apparently fat-fingered a key combination that saved the post! Lost a few paragraphs that I won't repeat; summary -
I think Evernote did their best to protect our interests, and I know they're moving heaven and earth to fix any resulting problems. They're not the bad guys here. Let's let them get things sorted out and stop sofa coaching them how they should have done their job!