Hi guys, I totally feel for you too.
One of the reasons your interviews may have felt hectic were because USC decided to change the way the candidates are selected, at least for this year. Normally, all the mfa faculty would conduct the interviews but this year admin decided they would select/interview some folks and only some faculty selected/interviewed candidates. All in all, you can imagine why it may have felt weird.
I tentatively said yes and submitted my deposit, but I'm actually waiting to see how the program settles down this spring. I think it's absolutely insane that the school hasn't decided which faculty will be there next year, the available funding and TAships. They refuse to answer any questions related to this topic. It's safe to say all of this has nothing to do with the faculty, rather it's these huge shifts in admin, specifically the new Dean's vision. Pretty bat shit crazy BUT the school remains to have really good resources that other programs do not offer, like a 25k teaching fellowship for one recent alum, or a 5k travel grant for a recent alum to research, develop, and exhibit new work. TAships that waive your tuition completely and offer a 11k stipend are still available but they will be more competitive. It might be that this year isn't the right year to go and that I apply again next year or focus on another school.
I declined Bard because it wasn't the right time to leave due to family matters, but it's a school that will be at the top of my list if USC does not pan out.