It looks to me like the data was stored in a temporary cache and never got synced because the application crashed. It's an unfortunate experience, but not one that warrants a fearful take on Evernote. Things happen. I've typed a draft in Gmail before and it never got synced so I've lost it, but it doesn't make me stop using it. Maybe we all need to just take a deep breath and remember how it was before everything synced.