Imaro
Legend
That's because you've completely subverted the example. Sure, if the character is built around swinging from the chandelier, then doing so would not be out of character. But, let's be honest here, not every character is built that way. And, I'd go so far as to say, many characters aren't built that way.
Being honest... I don't see too many, if any, players who think doing something like disabling traps, sneaking, etc. is cool... and then build a fighter. They usually build a character to do the things they think are cool. So I would argue few to very few characters are built in a way to minimize what a player thinks is cool.
And, you're absolutely right. It doesn't necessitate the different stance. However, in many cases, players will adopt different stances simply because what they want to do and what the character would want to do are at odds.
I just don't find this to be the case on a regular basis... not enough where you can say most, or many...
In this thread: http://www.enworld.org/forum/general-rpg-discussion/174075-good-idea-pull-lever-dungeon.html over half the players have their character pull the lever. It's almost never a good idea to do so, but, at least half of us do it anyway. And, it's almost always just to see what happens.
This example doesn't relate to what we are discussing at all. The result of pulling the lever is unknown, so it is neither a bad or good choice. Secondly we still have no information on the character motivation, personality, etc. so pulling the lever (especially for an adventurer) could still be the player in actor stance and doing exactly what his adventurer would do.