Replying to My MW2 Got hacked... :/

So NS tonight i was playing MW2 and I started this demolition game and i spawned on the wrong side, like i was with the other team, i pursued to kill them all them left cause i kept spawning with them. On my MW2 main menu it reads You got fucking owned. . . my classes were all fucked up like Akimbo intervention with secondary as akimbo barrett, there was a class of Ranger as main with heartbeat and silencer and fall camo. . .  My classes names are all different colors and shit. :/ such a piss off
has this hppened to anyone else? can i fix it?