What are other ways they could've gotten rid of their bosses?
Dale could've either kept a tape recorder on him to document all of Julia's sexual harassment, or showed the pics of her taking advantage of him to the cops.
Kurt could've just had Bobby arrested for doing cocaine at work, especially around dangerous chemicals.
After learning how violent and jealous Harken was, Nick could've just planted Bobby's cell phone in his house, along with maybe a fake love letter, to provoke Harken into killing Bobby (like what happened) and then have him arrested for it.
What else could they have done?