USATF is trying to serve two masters with the selection policy (and not doing too bad a job of it). The first priority is to maximize team size. So if you get multiple A's, they go, no matter what.
But failing an A qualifier, they keep the paying customers satisfied by putting on a race at the Nationals where the fans know that the guy who crosses the line first (99.9% of the time) is going to the WC/OG. Tough to sell tickets to a seleciton meet where at meet's end you have no idea if the winner actually won anything.
So, as long as the winner has a B, he goes, so long as there is only one A. As soon as there are two A's, the winner gets trumped.
Broe could barely walk (bad back) after the final at Stanford. Don't know if he's going to try for an A, but since hasn'tso far, my GUESS would be no.