Given that in another thread, about a certain S & S flat ride, you have said about 10 times that you're going to say no more on the matter, it would appear that you suggesting that anyone else has to have the last word is laughably hypocritical.
I've only been on the forums a little bit but you're already coming across as one of the most belligerent internet users I've ever come across. Pluk is discussing a matter of interpretation - it's not a case of him 'thinking' something and you 'knowing' something else (and you would be well to think about what such a statement makes you look like to everyone else reading - trust me, you're not winning any friends), it's simply a case of who you ascribe the blame to.
In this case Pluk is correct in that H and S set guidelines, and it's the park's fault for not ensuring that their structures meet these. You saying you 'know' something else is beside the point - we all 'know' what the issue at hand is (the rocks weren't safe to stay up), most sensible people would suggest that it wouldn't have been to much work to repair/upkeep/replace the rock work, and that therefore the park are to blame. If I owned a theme park with rides that were falling apart, faulty restraints, fire hazards and unstable structures, I could claim when it was shut down that it was ;Health and Safety's' fault. I assume in this case you wouldn't agree, perhaps you would like to apply this to what we're talking about here and realise how childish and, frankly, silly you sound.