When I read about things like this happening, my first thought is that it must be

. It's just so completely ridiculous. What possible gain can said company think they can get from this? I haven't seen the calendar in question, but given the creators affiliations, I would assume it contained no slander or derogatory remarks towards anything related to said company.
You know what they say, "There's no such thing as bad advertising". Could this be some kind of misguided publicity stunt? Seems unlikely, but so do the alternative explanations.