I wasn't there, just trying to figure out what happened. Leo was with Lex until 500 to go and then dropped 11 seconds. At 2 miles they were 8 seconds ahead of Aaron, but then Leo finished just 2.5 seconds ahead.
It is possible he blew up, but I don't think so based on how he looked. It is possible he dropped back to help Aaron, but that seems unlikely and unproductive. Probably Leo was just saving legs as Lex picked it up the last 400, no reason to kick.
While we're talking Seymour went from 4th at 2.1 and 27 seconds down to 13th and 1:02 down. Doshi made the opposite movement.