Bagpuss
Legend
He gives several examples in the essay, so I don't want to repeat them here, but his presentation of the premise is fairly ironclad--if you create a rule and the characters have no reasonable explanation for how and why it "works" inside the game world, the mechanic is dissociated.
Problem is his examples aren't ironclad.
His first example is... Trick Strike (Rogue Attack 1) which he has a problem with just because it is a daily.
The problem is that this is a Daily power -- which means it can only be used once per day by the rogue.
Huh? Why is Robin Hood losing his skill with the bow after using his skill with the bow? Since when did a swashbuckler have a limited number of feints that they can perform in a day?
There's a fundamental disconnect between what the mechanics are supposed to be modeling (the rogue's skill with a blade or a bow) and what the mechanics are actually doing.
If you're watching a football game, for example, and a player makes an amazing one-handed catch, you don't think to yourself: "Wow, they won't be able to do that again until tomorrow!"
Thing is when you see something like this...
[ame=http://www.youtube.com/watch?v=NhN0OZA3aIs]YouTube - Best Catch Ever?! - Morgan State Player Makes Unreal Catch![/ame]
You think exactly that. First because the set up situation isn't likely to occur exactly the same, in that game or even next weeks game, or even in practice. Second, because the wind conditions could easily blow the ball to the left or right, or the defense could have caught him or any number of situations. There are loads of receivers that drop the ball, in similar situations or aren't even there to try to catch it. The power represents the occasions when everything goes just right and they have the skill, hence it is a daily and not an at will.
Same with Trick Strike, it's not a loss of still from the rogue it's the fact the other variables aren't right. The opponent sees through the feint, or some other event.
The definition of disassociated mechanics is fine, just the application is prejudice by his own dislike of 4E.
You want to talk disassociated mechanics in D&D start by looking at hit points they stand out far worse than any of the powers in 4E and we've had hit points since the beginning and no one seems to mind.