His blog is getting overrun by traffic, but the CN notes cribbed from Saul's reaction to the news that the Credit Ag doctors would not release him to race. Raisin's conclusion is that his career is over. Apparently he did well with the neuropsychological tests to handle racing, but doctors thought that he risked severe consequences if he hit his head again. I'm sure when the traffic mellows out, his blog will be something you should read. It must be hard to hear such news, to say the least. Most people would choose life over even their most cherished activities, but the fact that enough people differ shows how hard a situation it is to face. I guess it depends on whether you agree with the doctors telling you that you have no choice.
Either way, well wishes Saul.