You are paid to keep a lid on this sort of thing.
When I taught video production years ago, I used to explain to my students that their works were like Frankenstein monsters; once they were aired, they took on lives of their own. If they offended or embarrassed, you could not stand beside them and explain them. You could not step in and correct anybody who did not get what you may have intended to say. If you didn't plan carefully before you pushed the "publish" or "play" buttons, any subsequent "misinterpretations" were your fault.
Martellus clearly does not understand this. And if he doesn't soon, he will never get a fair endorsement deal, even if he becomes Antonio Gates II.
Call me. I can help you. I'm serious.