There was an additional reference that wasn't just speculation on Reddit. I linked to Reddit and that was the first time I have been on that site. The reference on the other source may have been removed.
I would have sworn it was Q and was a fairly direct reference to a device that occurred several weeks after the original reference to PEOC but I can no longer find it.
You are correct!
This is the one you're looking for
Q !UW.yye1fxo ID: 567809 No.325370 📁
Feb 10 2018 05:23:04 (EST)
You will cease to exist.
Truth to power.
How’s the bunker these days?
[14] live
[Hello]
[PEOC force failed]
Q