The reference in the SPAM to the banned/suspended "pissant" seems to indicate that this childish stunt was pulled by someone upset over that suspension/ban. I wouldn't jump to conclusions and assume it was a Hunter supporter, though, as some of the more fringe Romney supporters are quite capable of being this childish.
Oh, I agree with you. Looking at this again, I am inclined to think it is someone who wants to divide the Hunter and Thompson supporters. Someone wants to create further division between the two camps.
The question remains—how many Freepers will fall for this juvenile stunt? Some even think it is coming from Fred’s campaign for pete’s sake.