Cisco WAN :: ASA 5510 Config For Failover

We have two offices in the US and one in Mexico. Our site in Mexico connects to our headquarters in the US over an AVPN/ MPLS circuit .Mexico has a separate Internet connection through TelMex. There is an ASA 5510 at headquarters and an ASA 5505 in Mexico. We have a fail over VPN set up in the ASAs for times when the MPLS circuit goes down. All Internet traffic in Mexico is supposed to be routed to the TelMex connection. All company traffic is supposed to be routed to the Cisco router. ASA is supposed to be last resort route. We have a fail over VPN set up in the ASAs for times when the MPLS circuit goes down. (Or at least we did until I had someone work on the configuration)  Everything had been working fine for the last 4 years.
 
Yesterday when the MPLS went down, so did their Internet connection. I realized the Internet traffic is now coming through the MPLs circuit to head quarters and out our ASA. Obviously there is a problem with the configuration. I do not have enough experience to figure this out. I have attached the configs and the routes for both the ASA and the router.