Ah ah ah hah! Okay, now it's starting make sense why we're talking around each other here. One of the key premises of Alexander's entire argument is that the act of "dissociation"--players making decisions outside the boundaries of those the character can make within the milieu--is inevitably and irrevocably "leaving the PC's perspective." It's a direct 1-to-1 correlation; you make a "dissociated" decision, you are necessarily not roleplaying at that exact moment. As soon as the player "re-enters" their "PC Habitation" space, he or she is then "roleplaying" again.
/snip
And you don't see the inherent problem with this definition? Lots, and lots of RPG's are now no longer role playing games by this definition. Basically any RPG with meta game resources stops being an RPG.
Take 3:16 Carnage Beyond the Stars. Great game. Lots of fun. In the game, you, as the player, can declare that any scenario is won by your character, so long as you have the resources to spend. In doing so, you must define some essential element of your character that was previously undefined, through the use of a flashback, dictated by you, the player. That flashback then becomes an integral part of that character and the player is expected, from that point forward, to use that element, whatever that is, in presenting his or her character in the game.
In other words, your beginning character is largely undefined. The character gains definition through play. Note, you can also dictate the terms of a loss using a similar mechanic. And, again, that element becomes part of your character.
Or take FATE. Bennies and Fate Points are essentially meta-game resources. You or the DM can push anyone at any time. By this definition, we aren't really roleplaying at this point, despite the fact that these pushes are all about defining our character and playing our character role.
Or, to put it another way, this definition is one big ball of Badwrongfun, essentially excluding any game which JA wants to exclude (4e obviously) while still including his favourite games under his own definition.
I don't think JA is making an argument, he's framing a definition. Disassociation = "stepping beyond the boundaries of the character." I freely admit that you can define the word in other ways, because we're discussing what is, for us, technical jargon.
In that framing though, he's defining the arguments parameters. In order to go forward, anyone who wants to discuss this has to use his definitions, which by definition EXCLUDE any game he doesn't like, for no other reason than, he doesn't like them.