Don't worry, many people hate motion blur, so there are should be many solutions.
I've used this. It's part of a trainer, named San Andreas Camera Hack. The option to disable motion blur is in the Display menu. It has several other features though. Note that I have experienced something where the screen gets stretched/squeezed.
There's this. It's called Performance Tweaking Tool. Some comments say it's a virus but it could be a false positive... Haven't tested, etc.
Also, something called SA Limit Adjuster. It's supposed to change things, values, etc. I think you're supposed to set Vertgio to 0? I don't know, I haven't tested.
See here, or here for info.
I've taken quite a bit of time to write this and search for these tools, so I hope you enjoy as well as any others.