PAying something like that would also be right in line with his MO... don't know how many times I saw him "pick up a tab" or buy something for someone (often coaches of the teams his kids played on) to try to curry favor with them.
how would paying this ticket gain him any favor if no one knows that he did it? it is quite the mystery... who paid the ticket??? are you positive your son did not pay it?
btw, i think it's normal that the OM asks a friend or relative if the WW is okay after the H finds out, especially if there is NC...he is left to wonder: is she okay? did he kick her out? did he beat her up? etc...
how did BFF take the news that she is now persona non grata?
