But the Linares leg still looks okay. I've written to the organizers for more info. If you visit the site of the Morelia chess festival, you now find this under the international open.
Ay caray, que pavada. I know several players who had already bought tickets to this event from North America and Europe. When the organizers started to recruit American GMs a change was made in the schedule of the US Championship to allow players to participate in both events, which meant cutting a day of activities in San Diego schools. This is a serious blow to the credibility of chess organization in Mexico, although the tournament organizer was Jose Cuchi of New York Open fame. [Mr. Cuchi writes in to correct me here. He was an advisor, not the organizer.]