I totally agree with PGs comments. Personally, I've found that there are two times you can leave a job for minimizing the downstream negatives. One of them is after you've been there two or more years. So, you'd have to stick it out. The other is very, very early -- when you realize you've made a mistake, and you can honestly admit that to people who will be asking you about it for years in interviews. If you're only there a VERY short time and you "wised up," that's one you can talk around successfully, but you'll need to follow it with a success and great references.
“Humility is not my forte, and whenever I dwell for any length of time on my shortcomings, they gradually begin to seem mild, harmless, rather engaging little things; not at all like the glaring defects in other people’s characters.” - Margaret Halsey