1. I'm not the type of person who enjoys retaliating
2. I have no idea who set me up.

If I did know... one possible response would be to confront the guy who set me up.
If I could do it over... I think I'd just suck it up and talk to the owner. Not sure what I'd say. Maybe even, "I don't think I like working in an environment like this." and then give my notice. It's not like I needed the job.

Or I could suck it up and look for an opportunity to talk to him and say something like, "I'm not sure who you're having a problem with, but I do break them down." Then depending on what happened, I could decide what to do next.