Just because Hurd decided to bet big on WebOS - it doesn't mean that bet was ever going to pay off.
Gruber is correct and HP and Apotheker are going along with their plan as intended. The tablet/phone business was a long shot and their PC business over time was going to get weaker, they don't own the OS and hardware is tough to compete in with Chinese manufacturers. Their best shot at long term survival was enterprise software, and that's what they are doing.
Perhaps they could come up with some kind of enterprise solution for WebOS in the future, but it's probably not their focus right now.