I agree TE it is all about how the scree is treated! I think you're fine as you picked your way precariously down it...
BTW you must have nerves of steel, I sat at the top of that scree in June and pondered on picking my way carefully to the cave. However I'd taken a wrong turn earlier & walked almost 100m below the top & that was so petrifying I decided only to stick to the path from then on! I turned white and everything.
Interesting to see the picture you posted with the other factories on it, something for me to do next year. I decided whilst at the top of Pike o' stickle, I'll be spending a whole week wlking about the langdales next year, rather than the day I had this.