Oh man, I feel your pain. Nothing worse than spending a long time working on something, then have it disappear into the void because software does something unexpected.
I'm pretty old-school when it comes to writing Steemit posts. I do all my writing on my iPhone Notes app, then copy & paste into an e-mail to get it on my computer. From there I paste into the Steemit submit form and do markdown formatting. When I've got it looking right, I copy & paste into a Notepad text file and save it for future reference or in case the submit form malfunctions. For spell checking I rely on the built-in Windows spell checker. And that's it. Call me crazy and primitive, but this procedure has worked just fine for me so far.
That's what matters in the end though. That process would probably drive me nuts but everybody's different and used to doing things their own way.
Thanks for the condolences, I appreciate it. In my mind it was a good post - one of those that if you lose it you just have to decompress and let it slowly come back to you. It'll happen. Just not today. :P