yeah, still no idea. This is one of those obscure "i've been on neogaf, all of its offshoots, whatever neogaf was before neogaf and irc and newsgroups with gaf characters before they joined gaf, so I know everybody and all their quirks, despite having never met them irl" jokes.
aka lame and at least partially connected to so many bore members' inability to get pussy 
Man I'm too beastly at video games to be scrounging for e-cred like that. He's not exactly an obscure figure over there

yeah, but you can't expect people to actually pay attention to the social culture of that site.
I guess the answer is that I write long sentences. And use ellipses.
I'm not trying to sense move you dumbass. That's the whole thing.
I got it, I know. You're not trying to sense anything. Yes, if you disembody this quirk and hold it up as an example of sloppiness, it's going to look bad. In reality (the context of the gameplay), it's a 3 second moment you're talking about here. More so, it has no discernible effect past those 3 seconds. Because the answer is, if you want to turn around as soon as a bullet is a second away from going up Samus' wonderfully submissive vagina that I would love to dominate with my oppressive male member, sense moving is going to take priority over---GETTING HIT. WOW, fancy that?
A lot of games have context buttons that do more than one thing and pretty much all of them have issues with that button sometimes not doing what you want it to. I'd say this is a lot more hidden.
Deal with it.