I think Crookstones and crookrise are both on the edge of Barden Moor. The news article says that footpaths remain open, and I'm pretty sure there's a footpath up to crookrise, but I'm not sure about Crookstones. It would probably be worth contacting the BMC to check if the Moor closure affects the crag or not, but I would hazard a guess that it would.