Summary: Then I turned the bluetooth keyboard so that only the laptop's built in keyboard would be active.…Nope, still actively spacing.…Then, frustrated, I looked to see if there's some form of 'sticky keys' combination for the space bar.
Summary: It's appeared twice now on my Bluehost account (seemingly random) without warning or activity on my part and it "fixed" itself after a short period of time…Maybe it's a result of my Bluehost overlords upgrading the servers?