My copy of UT2k3=hijacked? Undesired models used as bots

[legacy-SplitJedi]

Hey, I just downloaded a bunch of UT2k3 mutators and now whenever I play an instant action game, the bots have changed, they have weird names, some like SP10221, and others have turned into anime models and crap like that(including one that turns into a huge freaking rock!). This pisses me off, because it makes the game almost unplayable, and I didn't authorize it at all. How do I get rid of it, and to whom do I owe a nasty email?

[legacy-ThePerfectCore]

Don't play with the mutators. If that doesn't fix it, delete the game and then install it again.