Cisco WAN :: 3925 Connected To Internet For VPN Backup

I am trying to set up a redundant OSPF setup and I am seeing behavior I don't quite understand. At the main office I have two routers, a 3825 connected via full DS3 to the MPLS cloud, and a 3925 connected to the Internet for VPN backup.There are nine branches, but I am only going to talk about three. The three branches all connect together as well as having their own MPLS connections to the cloud. They are all 2821 routers with a 4.5 Mbps multilink interface into the cloud (three T1's). One of the branches has a backup IPSec/GRE Internet connection that I want any of them to be able to use in case of an MPLS problem (which there have been many lately, sometimes involving all of them going down at the same time). The connection into MPLS uses Inter-area OSPF with the provider. The Tunnel connection is also using IA OSPF (the main office is area 0 and this cluster of branches are all on area 100).
 
OSPF seems to be behaving oddly. At the main office, on the 3825 with the "backup" shut off, if I do "show ip route 10.51.0.0" it shows this output: [code]If the metric before was 24, why would it put in a route with a metric of 53 now? What's worse is that the branches all think they should connect over the MPLS and the main office sends everything over the VPN. It works, but I don't really want asymetric routing! I have included some configs as well... those which I consider relevant. I am including a diagram that has more on it than is relevant, but what I referenced is here (and yes, spanning-tree has been properly configured on the red fiber connections with the connection between FEC2960 and Hl2960 blocking, but try to ignore the LAN stuff because this is in a transitional phase right now anyway).