no, about 3 other people including myself, know how to shoot (with Guns), while in UFO Mode.
Im not telling anyone, because it will just ruin it for everyone else now that everyone knows how to use UFO mode. i will however give you all a clue: if you know how to use Mods on Cod5 zombies/Cod4 for Xbox 360, then you will figure this out in no time.

oh and before you all start flamming me, i figured this out myself without help from anyone.
also there is alot more you can do with the team switching and old-school codes, Eg. i can make any game type a old-school/hardcore not just S&

, and with team switching you can have UAV just on for yourself, so you only need 3 kills for an airstrike and 5 for a helicopter.