Even if that works, the combat engine in this game won't make the average player sudden become OP duelists. There's the whole timing and distance thing to worry about, and as far as I'm aware that hack doesn't compensate for those at all.
Other than auto-aim, because wtf are you going to do against that shit except plug away and get a skill-kill when you can vs those my old friends, I firmly believe that most cheats and hacks are fully counterable by determination and superior gamer skill. Only reason I feel auto-aim is different in most FPS games is because I've played them for so long that I know it's hard to beat a well-written bot that targets your head and instant fires the moment you have a pixel within LOS in FPS games.
Anyways, was just clarifying for the OP that yes they exist. But it's still not something you should concern yourself with too much. Even questionable players like the aforementioned Crymoar, who only looked suspicious to me after I'd defended her against those accusations for a while when she blocked 3 people attacking her front and chambered a pikemen attacking her from behind all at the same time. I believe some people are insanely good, but at that moment the sheer lunacy of that scenario made me start questioning her integrity.
Agreed with my fellow Seattlite. It's a shame really, even though the gameplay of this game still allows skill > hack through juking etc.. the average person picking up something like this is no longer average. I miss the days when 80% of the population would miss their manual blocks.
On a side note, anyone who knows where the hacks are should report them to chadz via pm (if he doesn't know them already), or even Talesworld. I'm sure it wouldn't be too hard to come up with something to counter the script. Giving the hacks to the developers would benefit the community as a whole. Usually indie games like this are great because everyone is on an even playing field.
Oh, TW got a few PM's already with links to a few sites offering these style hacks for warband. I assume that in their patching they fixed a number of issues because most of the sites I know of have the tags added to the cheat descriptions *May not work with current patch* now.