I reallly don't understand the man. It looks like he has no understanding of the reality and history of F1. Bernie always acts like a whore. You can do what you want and come back next day waving money and he will deal with you.
The FiA and the teams are an entirely different story. The FiA is a seriously political organization that has been in operation for ages and has always worked politically and not economical. In politics you cannot piss people off. You need to be polite and diplomatic and have a good feeling how the trend of the public opinion is developing. You certainly do not succeed by way of legally battling the authority of the governing body. If Stefanovic would get away with that it would be extremely strange indeed.
Next the teams. They will also dislike the attitude of a guy who thinks he can strongarm his way into their priviledged little franchise. Many of them have earned it with blood sweat and tears to exercise their voting rights and they love to stick it to outsiders. So bottom line I think that the 13th slot will rather remain empty than go to Stefanovic.