yes it works.. i have tried it before, but its not useful

maybe its for some rounds..but not useful for later rounds
1. if u kill them before coming out of window u wont get Powerups
and if u dont get power ups u will have no ammo then what u do? but if u let them come out u will die coz of small area
2. not good place for scientist
3. u cant PAP and it will get very boring
otherwise the glitch works.. let see how long it takes treyarch before patching this useless glitch, maybe they never patch it lol