Southern Mexico: Land of the Dead - Can't push over rune pillar

[Yochanan]

After getting Thor's belt, it appears I'm supposed to push over the rune pillar so I can climb out to the exit. However, all I can do is push it to the end of the rut it's in. There's a slight dip at the end where it seems like it should overbalance, but does not. That shouldn't be the way it tips over anyway, since the exit is to the left when pushing it that direction. Once you push it all the way to the end of the rut, you can't push or pull it back over the dip. Maybe you don't need to, but once it's at the end it doesn't go anywhere. Any help?